Law enforcement said all signs pointed to a self-inflicted wound, although no suicide note was found. There were no signs of drug use, authorities told TMZ.

Birch began playing with John in 1992 and can be heard on “Candle in the Wind 1997.” Other artists he has played with were Tina Turner, Stevie Wonder, John Mayer, Cher, Sting, Backstreet Boys and Spice Girls.

His last performance was on “Late Night with David Letterman” last year, performing with John and Leon Russell.