Just in my MP3 collection, I have Billy Joel, Billy Thorpe, Billy Squire, & Billie Holiday.
Definitely the most common name in my whole collection.
Can you add more Billies?
How 'bout a name that’s yet more common?
Billy Idol
Bonnie ‘Prince’ Billy
Billy Bragg
Billy Ray Cyrus
Billie Piper
Billy Paul
Billy Preston
Billy Joe Royal
Billy Strayhorn sang as well as arranged for Duke Ellington, didn’t he?
Billy Ocean
Billy Bob Thornton (I KNOW I’ve heard him sing somewhere along the way.)
and the Hillbillies.
Billy Gibbons of ZZ Top
By a bizarre coincidence, I am now listening to a 1915 recording of Billie Carleton singing “Show Us How to Do the Fox Trot,” from the show Watch Your Step.
Reverend Billy C. Wirtz
Billy Kemp
Billy Joe Shaver
Oh, and how could I forget two of my favorite recording artistes, Billy Murray and Billy Jones of The Happiness Boys?
Billy “Crash” Craddock
Billy Vera
Billy Corgan of Smashing Pumpkins fame
This far and no mention of the great **Billy Ecstine**?!?
Whoops! :o Forgot the K[. Eckstine.
Billie Joe Armstrong of Green Day.
Yeesh! 
o
How about Bens, too? Ben Lee, Ben Gibbard, Ben Folds, Ben Kweller, Ben Harper…