Elisabeth wanted to practice bass, it was one of the things she was good at besides well being smart she supposed. Playing bass was her creative side of Ravenclaw showing, and she enjoyed playing it. She had started when she was still in primary school, and had kept to the habit, orchestra being one of her extracurricular activities at Hogwarts. So, after grabbing some of the music they'd been working on; a bit of Dvorak, some Corelli, and Bach, she headed down from Ravenclaw tower to the orchestra room.
As Elisabeth neared the orchestra room, she heard piano music coming from inside, and someone singing, she hadn't realized she had already walked in. "Sorry to bother you." she apologized, "I'll just, um, get my bass and my bow and get out of your way." she said, "What you were playing sounded really good though," she commented, grabbing her bass from one of the racks, "I can't play piano except for a few chords and some simple scales." she added, placing her French bow in its quiver. "I'm much better at bass since I've played it much longer." she explained.
((OOC: We actually played Dvorak's New World Symphony, Corelli's Christmas Concerto, and Bach's overture in D major (I think) In orchestra this year))