Peter Cetera has offered to once again take the stage with Chicago when they are officially inducted into the Rock and Roll Hall of Fame in April.

Cetera has not performed with the group since leaving in 1985.

In an open letter posted on his website, Cetera offered up his services for the gig and invited a number of former band members to join in on the occasion.

"As a finale, we can walk onstage together one last time as a group, I'll strap on the bass, and we can do "25 or 6 to 4? in the key of E," Cetera wrote.

"I believe it would make for one fantastic Hall of Fame moment and satisfy those who have always wanted some sort of reunion.

Along with your current members, I would also like us to invite past members Laudir de Oliveira, Donnie Dacus, Kenny Cetera,Chris Pinnick, and Bill Champlin to join us up there as well on the song.

They've all contributed to the legacy of the group and I think this would be a fitting way to honor them.

In the end, this should go a long way towards healing old wounds and showing solidarity on that night. At least I hope so!"

The other members of the Hall's Class of 2016 are Cheap Trick, Deep Purple, the Steve Miller Band and N.W.A.