Al Grey
Trombonist Al Grey was famous as "the last of the big time plungers," for his mastery at using a plumber's plunger to manipulate the color of his instrument. The result was a soulful quality that sounds as if he's singing the blues.
Grey rose to prominence as a soloist and gifted accompanist to singers, particularly on bluesy numbers. His unique style developed over years spent playing with many great bands
Source: NPR