Pianotarium is a piano tribute album to Metallica by Scott D. Davis. It contains eight piano covers of Metallica songs and three original compositions. Davis had been a Metallica fan since his teenage years; explaining the genesis of the album to the Sacramento News & Review, he said: "I’ve been a huge Metallica fan since I was 14, and have wanted to do this album for a long time. I had a hunch that their music could sound really amazing on the piano. There’s a great deal of beauty in Metallica’s music, and I wanted the piano arrangements to highlight that quality, to bring forth many of the harmonies and intricacies that have always set Metallica apart. I also tried to take advantage of the powerful, edgy resonance of the grand piano, so that it wouldn’t totally lose its 'metal' intensity."