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1.
An individual/poser who owns and listens to music from way too many different genres just to make themselves seem worldly or sophisticated.
"I just noticed all the different music that Steve has on his iPod, he's such a friggin' musaic."

"Jims always listening to such obscure music from weird artists just so he looks trendy, what a musaic!"
by Rev. Tom April 27, 2006
 
2.
A play on the words music and mosaic. Refers to music that is created by combining many different samples to create a new and original song.
"The music by DJ Shadow is created by using samples from many different bands, creating a musaic"

"the composition was a beautiful musaic"
by TheRisePeople February 26, 2009
 
3.
An individual/poser who owns and listens to music from way too many different genres just to make themselves seem worldly or sophisticated.
"I just noticed all the different music that Steve has on his iPod, he's such a friggin' musaic."

"Jims always listening to such obscure music from weird artists just so he looks trendy, what a musaic!"
by Rev. Tom April 27, 2006