Music of the Spheres World Tour
After releasing their eighth album "Everyday Life" (2019), Coldplay stated they would not be touring until they could ensure their concert runs are environmentally friendly, which led the record to be promoted with small shows for charity and a special performance at the Amman Citadel in Jordan, broadcast by YouTube. On 14 October 2021, a day before the release of "Music of the Spheres", the band posted on social media they would be returning to live shows after the COVID-19 pandemic. The announcement was accompanied by a detailed 12 step plan which was developed for two years with leading environmental experts and set out how Coldplay would reduce carbon dioxide emissions by 50% compared to A Head Full of Dreams Tour. To celebrate the album's release, they performed a one-off concert which inaugurated Climate Pledge Arena on 22 October 2021. Similarly, the band started the tour at Costa Rica's Estadio Nacional due to the country's electricity grid, which is 99% sourced from renewable energy. A team of sustainability experts was commissioned to investigate Coldplay's carbon footprint and study how their partners and suppliers could cut emissions. Along with BMW, the band also developed the first ever mobile rechargeable show battery, which is made from recyclable BMW i3 batteries and power concerts by using renewable resources such as hydrotreated vegetable oil, solar power and kinetic energy. Unavoidable emissions were then offset according to Oxford's principles. They noted one tree would be planted for every ticket sold through a global reforestation agreement with One Tree Planted as well. For transportation, the tour was routed and pre-planned to reduce air travel, members of the band mostly used commercial flights, a surcharge to utilize or supply Sustainable Aviation Fuel was paid whenever possible and ground freight was done with electric vehicles or biofuel. The stage was then built by using lightweight, re-usable materials (such as recycled steel) and upgraded to incorporate low-energy LED displays, lasers and lighting set-ups, along with a PA system that consumed 50% less power, consequently reducing environmental noise outside the venues. For special effects, Coldplay used biodegradable confetti adapted to require less compressed gas for ignition, while pyrotechnics had new formulas to reduce or eliminate harmful chemicals and mitigate the explosive charge. Meanwhile, Xylobands worn by the audience were made from 100% plant-based materials, the band also pledged to decrease their production by collecting, sterilising and recharging the wristbands after every show. To minimize food waste, they had crew catering menus that offered plant-based and meat-free options as the standard, sourced products from suppliers or farms adept to regenerative agriculture techniques, supported the development of synthetic, lab-grown cultured meals, donated any surplus to local food banks, and composted organic waste such as vegetable peelings and scraps. For merchandise, partners and vendors were carefully selected to provide high quality and sustainable products made from natural fibres and re-usable elements, which were then packaged in recycled paper, card or compostable bags. Coldplay partnered with SAP to develop a free mobile application for the tour, which calculated the total carbon footprint generated by concert goers and encouraged them to take environmentally friendly travel options. Fans who committed to the effort were given a discount code on their merchandise store. Additionally, the band included kinetic floors and stationary bicycles on the stage to collect energy and further promote interaction with attendees. They also worked with venues to establish recycling programs, replace single-use water bottles with alternatives such as Ball aluminium cups, include refill stations, introduce aerated taps, lower flushing toilets and reduce water pressure. To ensure accessibility, bass-delivering vests from SubPac and two sign language interpreters were provided for concert goers with hearing loss. The band performed "Something Just Like This" in ASL every night as well. In May 2022, they announced Infinity Tickets, a limited set of $20 admissions for fans who could not afford standard prices. In 2022, "The Times" revealed Coldplay donated over £2.1 million to environmental causes through their J Van Mars Foundation during the previous year. Aside from teaming up with One Tree Planted, the band continued their partnership with ClientEarth, to which they have been patrons since 2011. Support to The Ocean Cleanup was declared as well, as they sponsored two watercrafts to collect plastic from polluted rivers before it reaches the sea in Malaysia. Other organizations endorsed by Coldplay include Global Citizen, The Food Forest Project, Sea Shepherd UK, Project Seagrass, Seafields, My Trees Trust, Farm Under The Radar, Project Quercus, Sustainable Food Trust, Global Tech Advocates, Knowledge Pele, Climeworks, Cleaner Seas Group, Conservation Collective and the Devon Environment Foundation, which have all assisted them to reach the world tour's goal. Additionally, Imperial College London's Grantham Institute helped the band to study and publish their progress. "Pitchfork" named the Music of the Spheres World Tour one of the most anticipated concert runs of 2022. Sales for the European leg were opened on 22 October 2021, with Coldplay selling over one million tickets throughout the day in the region according to "Billboard". Due to high demand, they announced fifth and sixth shows at Wembley Stadium. Four days later, extra concerts were released for King Baudouin Stadium and Stade de France, with Fnac reporting 200,000 tickets sold in record time on the latter venue. General sales for Argentina opened on 9 December 2021, the band added three extra dates at Estadio River Plate in the following hours to support the demand, which included selling 200,000 tickets in less than 17 hours. On the next day, media outlets across the country reported all shows were officially sold out. They eventually scheduled six other performances at the venue, which also went sold out. As of July 2022, the Music of the Spheres World Tour was reported to have sold over 3.8 million tickets around the world. The tour was met with highly positive reviews from music critics. Andrew Chamings from the "San Francisco Chronicle" stated despite his "cynicism, Coldplay's show was a joyous, bright, cathartic post-pandemic triumph". While writing for "Houston Press", Marco Torres mentioned "the whole night certainly felt like a beautiful dream, with balloons flying around, confetti bursting from air cannons and lasers shooting from the stage through the smoke" as the band played their hits, he concluded it was one of the best live music performances he ever experienced. Similarly, Mac Engel from the "Fort Worth Star-Telegram" commented that "in the 23-song set, Martin showed all of the skills that make him one of the top pop performers of his generation". Meanwhile, "NJ.com"'s Katie Kausch noted their first East Rutherford show was "pure fun" and the special effects were probably not necessary, since the songs "are good enough to stand on their own", but "confetti and fireworks are fun, so why not use them on a stadium tour?". According to Carly Thompson from "Tampa Bay Times", "Coldplay delivered what many seem to be looking for these days: an experience", she also complimented the "energy and excitement" present in the concert. According to University of Nottingham's "Impact" magazine, Coldplay are "redefining the rulebook" for eco-friendly touring, as their concert run "put environmental issues and climate change at the helm of international music news". Live Nation's director of global sustainability Lucy August-Perna commented that the band's ideas helped to further build on the framework the company had been developing over the past five years on their tours and venues. She also mentioned they are "working with Coldplay to adopt their plans and help standardize what they learn and best practices to provide sustainable touring options" for the artists that approach Live Nation about creating greener tours. "Vogue" Scandinavia noted the Music of the Spheres World Tour "sets the bar for how every artist, and fans, can contribute to reducing their CO2 emissions" as the band's "transparency on the reality that no tour will be carbon negative in 2022, while also putting their very best efforts into creating the most sustainable show on the market, speaks louder than words". This set list was taken from the band's 18 March 2022 concert in San José, Costa Rica. It does not represent all shows throughout the tour. Act 1 - Planets
#"Flying" 
#"Music of the Spheres" 
#"Higher Power"
#"Adventure of a Lifetime"
#"Paradise"
#"Charlie Brown"
#"The Scientist"
Act 2 - Moons
#<li value=8>"Viva la Vida"
#"Orphans"
#"Let Somebody Go"
#"بنی آدم"
#"Sparks"
#"Yellow"
Act 3 - Stars
#<li value=14>"Human Heart"
#"People of the Pride"
#"Clocks"
#"Infinity Sign" 
#"Something Just Like This" 
#"Midnight" 
#"My Universe"
#"A Sky Full of Stars"
#"Coloratura"
Act 4 - Home
#<li value=23>"Patriótica Costarricense" 
#"God Put a Smile upon Your Face"
#"Everyday Life"
#"Sunrise" 
#"Humankind"
#"Fix You" 
#"Biutyful"
#"A Wave"
Development ; Fans and accessibility
Other efforts include the first ever mobile rechargeable show battery, which was made by BMW, and a mobile application to interact with fans and help them to take environmentally conscious travel options.