The product is a 1991 blue Nirvana mudhoney concert poster from the United States. This original piece of music memorabilia features Nirvana, a rock and pop band known for their influential music and iconic sound. The poster captures a moment in music history and is a valuable collectible for fans of the band and music enthusiasts alike. It serves as a piece of nostalgia from a memorable concert event featuring Nirvana and other notable artists.