Don Everly, half of the Everly Brothers musical duo is celebrating his 75th birthday today (February 1st 2012).  Don is the older of the two brothers, known for their incredible vocal harmonies, which influenced countless bands including the Beatles and the Beach Boys.

The Beatles and Beach Boys 1960s harmonies were directly influenced by covering Everly Brothers songs from the previous decade.  For the record, Don usually sang the lower notes in the harmony while younger brother Phil sang the high range.  They still perform occasionally, although they consider themselves officially retired.   Check out a live video of the legendary Everly Brothers in action:

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