TOP 5 : BLUES
NO 5: ROBERT JOHNSON-KING OF THE DELTA BLUES
Without this there could arguably be no Rock N Roll and therefore no modern guitar music in whatever genre you want to mention.
The bulk of his recordings (and this collection) were made in 1936-37 and the sound certainly could be seen as a downside for those that prefer over- production, however to dismiss this for that reason alone is a great folly as this is pure unbridled music at it's most primitive yet overflowing with passion and honesty. Come Into My Kitchen and Sweet Home Chicago demonstrate Johnson's brilliance and song structure that set a template for many other rock bands since.
Even if you don't like the Blues, you still should give this roots blues album at least a listen and educate yourself on the origins of modern music.
Robert Johnson