The late Cream bassist Jack Bruce, Ann Wilson of Heart, Todd Rundgren, John Wetton of Asia, Judy Collins and more pay tribute to the softer side of The Beatles on "Keep Calm and Salute the Beatles," an acoustic tribute album set to be released on April 28.

Bruce's version of "Eleanor Rigby" is being billed as his last recorded performance by the musician, reports Rolling Stone; Bruce died at age 71 on Oct. 25, 2014.

The compilation of Beatles ballads was produced by Billy Sherwood, known for his collaborations with Yes and brief membership with the British progressive rock titans; he has also produced tribute albums dedicated to The Doors, The Who and Supertramp, notes Ultimate Classic Rock.

Other performers on "Keep Calm and Salute the Beatles" include Felix Cavaliere, KC of KC and the Sunshine Band, Stephen Bishop, Leo Sayer and Sherwood.

Keep Calm and Salute the Beatles Track Listing (according to Ultimate Classic Rock)

1. "Across the Universe" - Ann Wilson
2. "Penny Lane" - John Wetton
3. "Eleanor Rigby" - Jack Bruce
4. "Blackbird" - Liz Madden
5. "Norwegian Wood" - Andrew Gold
6. "You've Got To Hide Your Love Away" - Todd Rundgren
7. "All You Need Is Love" - Helen Reddy
8. "I'll Follow the Sun" - Judy Collins
9. "And I Love Her" - Howard Jones
10. "Ticket To Ride" - Felix Cavaliere
11. "Let It Be" - KC of KC and the Sunshine Band
12. "Yesterday" - David Clayton-Thomas
13. "Nowhere Man" - Martha Davis
14. "All I've Got to Do" - Stephen Bishop
15. "Something" - Billy Sherwood
16. "Hey Jude" - Leo Sayer