Blues pianist Katie Webster, who played with soul singer Otis Redding in the 1960s and Bonnie Raitt in the '80s, died Sunday of heart failure in Texas. She was 63. Webster, known for her barrelhouse style, recorded more than 500 singles in the 1950s and '60s, according to her most recent label, Alligator. In 1988 she recorded the album Swamp Boogie Queen with guests Raitt and blues guitarist Robert Cray. She suffered a stroke in 1993 and in recent years had cut back on touring.