Ahead of the 'Icons of Music' auction next month, Edge has been talking about how the new record is coming together.
"We went into this project allowing ourselves the indulgence of making music without thinking about where it was going to end up." he told Associated Press. "We're starting to get serious now."
Edge has donated two Gibson guitars and other items into the 'Icons of Music' auction which will raise funds for Music Rising, the charity he co-founded to replace musical equipment lost or destroyed by Hurricane Katrina.
"No one could ever come close to repaying the debt of those who have established this form (of music) that we all take totally for granted, this hybrid of European melody and African-American rhythm that's given us jazz and R&B and rock 'n' roll.
"There's something powerful about musicians giving instruments they own to an auction to aid musicians who are going through a particularly difficult time."
The auction includes guitars played by Kurt Cobain, Slash and Johnny Cash; a trumpet played by Miles Davis; and handwritten notes by Bob Dylan, Paul McCartney and Janis Joplin. The auction is set for May 31st at the Hard Rock Cafe in New York City when Aaron Neville is scheduled to perform and Edge will host.