Music Room (TR1)
From WikiRaider
The Music Room is one of the many rooms in Lara's Home in the original Tomb Raider.
It is located right next to Lara's Library, and from the Music Room one can go to the upper level of the Main Hall.
Inside the Music Room there's a large, blue mattress for practicing different kinds of jumps. There are also some musical instruments: a piano and a harp.
"Okay, let's do some tumbling!" says Lara when the player steps onto the mattress. She teaches how to do various jumps, and then the trip continues to the Main Hall.