The Funk Ark, the Washington Folk Festival: Free and Easy Take a lunch break with local band the Funk Ark. (Photo By Jesse Justice) Our picks for the best free events going on this weekend, including lunch break with the Funk Ark and the Washingotn Folk Festival. Singer Ellen Cherry The Baltimore-based singer-songwriter performs songs off her album "Please Don't Sell the Piano," whose songs Cherry wrote after losing her singing voice to a throat infection and relearning to play piano. Book reading for kids Author Michael Scott reads from "The Enchantress," the latest volume in his "The Secrets of the Immortal Nicholas Flamel" fantasy series for young readers. A book signing follows. Musical lunch break Head to the Fairgrounds outdoor bar at Nationals Park on your lunch hour for a set with local Afrobeat group the Funk Ark, which released the album "High Noon" last month. Art from the East Art professors and museum curators discuss what makes art "Zen" and examine the challenges of installing sacred pieces such as Tibetan Buddhist altars. Miro as Portrayed by Portabella The National Gallery of Art screens documentary shorts depicting surrealist artist Joan Miro. The shorts were made in the early 1970s by Barcelona filmmaker Pere Portabella, Miro's friend. All things zebra The National Zoo celebrates the black-and-white animals with demonstrations, keeper talks, interactive displays, a lesson about the zebra's famous stripes and more. Washington Folk Festival Glen Echo Park plays host to a festival of more than 450 musicians, dancers, storytellers and crafters from across the region. The festival's focus is on international culture as well as traditional American blues, bluegrass and old-time string bands.