* Aretha Franklin has canceled three more concerts -- including her June 22date at the DTE Energy Music Theatre -- for unspecified medical reasons. She plans to return to touring in July.
* Paul McCartney has posted a new letter of support for the Russian all-female punk group P**** Riot on his official web site after the band`s Maria Alyokhina went on a hunger strike. The letter can be found at www.paulmccartney.com
* Songs by David Bowie, Lou Reed, Talking Heads, Joe Cocker, the Rolling Stones and others will appear on the soundtrack for "Twenty Feet From Stardom," a new documentary about background singers. The film opens June 14, with the album following June 18.
* Bruce Springsteen's manager Jon Landau tells Rockol.com that more box set editions of The Boss' albums may be coming in the future.
* E Street Band keyboardist Roy Bittan is working on his first solo album, which will likely be all instrumental.
* Richie Sambora has broken his silence about his absence from Bon Jovi, telling MailOnline that Jon Bon Jovi "wants to see if he can pull off stadiums by himself. He is making it very difficult for me to come back...This is a private matter."
* Neil Young & Crazy Horse bassist Billy Talbot has released his second solo album, "On the Road to Spearfish."
* Judas Priest frontman Rob Halford is recovering from a back injury that's confined him to a wheelchair, but he promises fans that "It's going to be fixed. The Metal God will be bouncing back and everything will be great."
* Actor Rob Liotti says he's speaking with "one of the world's leading entertainment companies" about producing "The Legend of AC/DC," his docu-drama about the band and particularly original singer Bon Scott.
* Latter-day Paul McCartney & Wings guitarist Laurence Juber is planning to publish an autobiography, "Guitar With Wings: LJ's Musical Journey on Six Strings," in October.
* Sharon Osbourne, Ozzy's wife and manager, has confirmed she's returning to "The X Factor" in Britain for the first time since 2007. -- by Gary Graff, WCSX Classic Rock Insider