Instrumentalists you can recognize after 6 bars..?

Oops, can't leave out Bill Pitcock IV, the distinctive guitarist in The Dwight Twilley Band, as well as on solo albums by Twilley and the band's drummer Phil Seymour. He got his sound by plugging a Gibson ES335 into a pair of Fender Deluxe Reverb combo amps, an MXR delay between the two. One of my favorite guitarists, he was a 2-pk. a day man (Marlboro Reds), so of course died of lung cancer (in 2011 at the age of 58).

Six bars? How did you settle on THAT number (as opposed to, say, four)?

Guitar: Chuck Berry, Albert King, James Burton, Dave Edmunds, Albert Lee, Ry Cooder, Jimi Hendrix.

Bass: James Jamerson, Rick Danko, Joey Spampinato, Jack Casady, Jack Bruce.

Drums: Earl Palmer, Hal Blaine, Buddy Harman, Levon Helm, Roger Hawkins, Jim Gordon, Keith Moon, Ginger Baker.

Piano: Little Richard, Jerry Lee Lewis, Floyd Cramer, Spooner Oldham, Terry Adams, Stevie Wonder, Van Dyke Parks.

Dobro: Jerry Douglas.

Blues Harp: Little Walter, Charlie Musselwhite.

Fiddle: Doug Kershaw.