Most Influential American Musician of All Time?

I agree with Jeffery. I really can't think of anyone that comes close to his influence from a historical perspective although I'm sure some will say Miles Davis but not from a musician's standpoint IMO atlthough his music was certainly innovative and took jazz in a different direction. What is unique about Louis Armstrong is that he gave his instrument a voice that was unheard of up until that time and was built on by subsequent musicians. The major icon of jazz.

No Brainer - Robert Zimmerman

Armstrong is the first to come to mind, although you could argue that Sidney Bechet trumps him.

IMHO Louis Jordan presaged rock n roll and Chuck Berry perfected it - both were highly influential in that regard.

Tvad made a good call on Robert Johnson, too. BB King influenced a lot of folks as well.

Lou Reed and arguably Brian Eno have had enormous influence on pop music post 1970.

For better or worse, Grandmaster Flash is among the most influential recent figures.

Lots of arguments for post war jazz giants, too, but I'll let better informed folks fight that fight.

All in, a very interesting question - and I'd probably end up back where you started - Armstrong.

Marty

the most important...armstrong. the most influential...presley