mp3.com, number one, music, musicians, mp3, free downloads, independent artists, band, punk, record labels, numberonemusic profile, unsigned, get signed, merchandise, music exposure, artist development, A&R, fan community, scene, fans, garageband, charts, top downloads, myspace marketing, radio promotion, games, playstation, pc games, music videos, ipod, movie, stars, celebrity, rock music, rap, hip hop, alternative, stage,