Gregg Allman has been given the doctors' green light to go on tour to promote his new autobiography. Allman was supposed to hit the road this week to coincide with the publication of the book, "My Cross to Bear," but his plans were put on hold in order to have heart tests at the Mayo Clinic in Jacksonville, Florida, where Allman had his liver transplant in 2010. He's now been cleared and plans to begin the book tour on May 8. Meanwhile, the Allman Brothers Band announced a 14-date summer tour -- none in Michigan, unfortunately -- that begins July 21 at the All Good Festival in Thornville, Ohio, and includes six co-headlining shows with Santana. Carlos Santana tells The Insider he's planning to spend some time on stage with the Allmans during these dates. "It's the first time we've played together, ever," Santana says. "It wasn't like we were avoiding each other; our paths just having crossed. I'm looking forward to exchanging music with them. I have a list of songs I want to know if they're open to and how willing they are. I'd like to propose we do more than just Allman Brothers songs and Santana songs together. I want to find another ground. One of the songs I want to do is a song by Michael Jackson, 'The Way You Make Me Feel,' 'cause it's a shuffle, if you look at it. If you put the Southern Comfort in it and the Santana craziness with the colors, man."