Eric Clapton's 'Me and Mr. Johnson' is his sixteenth studio album (tribute to Robert Johnson) released on March 23, 2004 by Duck / Reprise.

This day (March 21, 2011), in Austin, Texas,, died Joseph William Perkins a.k.a. Pinetop Perkins, an American blues pianist and singer.

Muddy Waters' 'I'm Ready' is his thirteenth (and second produced by Johnny Winter) studio album released in January 1978 by Blue Sky,

Eric Clapton's 'From the Cradle' is his twelfth studio (and a blues) album released on September 13, 1994 by Reprise Records.

George Harrison & Eric Clapton, Frank Zappa, John Lennon & Yoko Ono, Journey, Albert King & Luther Allison, Grace Potter & Warren Haynes, Imelda May & Jeff Beck, Ariana Grande & Chris Martin, Joan Baez & Bob Dylan, Little Feat, Emmylou Harris & Bonnie Raitt, Sharon Jones & Susan Tedeschi, Luciano Pavarotti & Eurythmics, My Morning Jacket & Boston Pops Orchestra, Erykah Badu & The Brooklyn Philharmonic

This day (April 30, 1983), in Westmont, Illinois, died McKinley Morganfield a.k.a. Muddy Waters, an American blues musician.