Which band was joined live by Loren Humphrey, The Last Shadow Puppets or Hard-Fi? 
The Last Shadow Puppets: The Last Shadow Puppets are an English supergroup consisting of Alex Turner (Arctic Monkeys), Miles Kane (The Rascals, solo artist), James Ford (Simian, Simian Mobile Disco, music producer), and Zach Dawes (Mini Mansions). The Last Shadow Puppets:  They are joined live by Loren Humphrey (Guards, music producer, session musician) and Tyler Parkford (Mini Mansions). Hard-Fi: Hard-Fi is an English rock band formed in Staines, Surrey in 2003. Hard-Fi:  The band's members are Richard Archer (lead vocals and guitar), Kai Stephens (bass guitar and backing vocals) and Steve Kemp (drums and backing vocals).
The Last Shadow Puppets