U2 are reworking two of their classic songs in collaboration with Dave Hollister, a member of the American R&B group Blackstreet.

Hollister revealed his involvement with the Dublin band by posting on his Twitter page: "In the studio working with U2! Man I'm excited! Bono baby!!!!!!!!!!!!"

Apparently, the two tracks being reworked are ‘All I Want Is You’, from the 1988 album “Rattle and Hum”, and ‘Grace,’ from 2000’s “All That You Can't Leave Behind.”

U2 will be returning to their tour next month following Bono’s back surgery. The rock star has declared he’s now “fighting fit" after undergoing the procedure.