From the back of the core book:
Heavy Metal. The very name itself drips with power, testosterone and hairspray. Warriors on the stage of history, wielding their axes and mics as they do battle for glory! Trusts are forged and betrayed, mighty empires rise and fall. Ultimately, the only truth worth living for is Metal.
Long of hair and tight of pants, you join the ranks of Metal in your quest for babes, booze and glory. Try to Make It Big and hunt down an elusive record contract.
These are the heroes of an age.
This is their story.
Umläut: Game of Metal is a storytelling game which gives each player the chance to create and control their own Heavy Metal band. Simple mechanics let you chart their career as they rehearse, play gigs, fight among themselves and pull crazy publicity stunts. Will you make it big, or are your records destined to languish in the discount bin of obscurity? Can you hold your band together when the going is rough, or will you self destruct in a drug-fueled clash of egos?
Umläut web page