Bieber has done it again! America's favorite tween heartthrob turned tattooed rebel has caught our attention yet again with the debut of some fresh ink, and this time it has nothing to do with ex love Selena Gomez . On October 6th, Bieber went to Instagram to show off his chiseled abs and a tattoo of the word "Purpose" written in script above his navel (And yes we're all wondering where his famous Calvins are). The word purpose is actually the name of Bieber's 4th album, which is set to drop November 13th of this year. Bieber has yet to release the artist responsible for his newest tattoo, but based on past history it is safe to say that NYC's Bang Bang, who has tattooed the musician in the past, may be behind this tummy tat. Many Bieber fans took to social media to react to the singer's latest tattoo, voicing their opinion on Bieber's decision to promote his latest album through a tattoo. Yet Bieber isn't the first artist to pay tribute to his musical contributions through a tattoo. Here are a handful of musicians whose tattoos may be representative of their music.