Birth - 6 y.o. : John Denver, Waylon Jennings(Dukes of Hazzard Theme Song), etc...
6 y.o. - 8 y.o. : (started grade School... heard new stuff) Joan Jett & The Blackhearts, & (can't remember the artist but the song was:) Pac-Man Fever... And so on..
9 - 10 y.o. : Prince, Michael Jackson, The Monkee's,
11 - 14 y.o. : (Hip-Hop becomes the rage) Run D.M.C. , New Edition, The Fat Boys, Beastie Boys, etc... (13 y.o. would also be the start of the "Miami Vice" years lol),
14 - 16 y.o. : The Cure, The Beatles, Metallica, Janes Addiction, The Doors, (and lot's more that I can't recall)
16 - 18 y.o. : Nine Inch Nails, Pink Floyd, Red Hot Chilli Peppers, Sex Pistols, & lot's of other Heavy Metal..
18 - 21 y.o. : The Grateful Dead, The Grateful Dead, The Grateful Dead, Oh yeah, I liked Blues Traveler, and other Jam Bands, Did I mention Jerry Garcia?... LOL, & Beck
21 -23 y.o. : Introduced to Reggae Music, So Everything Reggae.... + Techno/Dance/Electronica
24 - 27 y.o. : (Rediscoverd Hip-Hop) 2 Pac, 2 Pac, 2 Pac, Sublime, 311
27 - 30 y.o. : (the Nostalgic years) "All Of The Above"
30 - Now : "all of the above", Everything Hip-Hop (Snoop, Talib Kweli, , Emminem, D12, etc...), More Techno, Marilyn Manson, & basically anything but Opera.. LOL...
Now - Future : Any New Hip-Hop Artist (Not Radio Played Hip-Hop Artist), Or Anything besides opera.. LOL
I know this List is not complete, But I guess that these were defining artist for myself, at those ages...