Simplify the following text for a Grade 7 native English-speaking person.
Original: She performed `` Holly Jolly Christmas '' for the `` Schools Out Christmas '' album , and sang `` Tossin & Turnin '' in the Oliver Beene episode `` Oliver & Others . ''
Simplified: She also sang `` Holly Jolly Christmas '' for the School 's Out ! Christmas album and `` Tossin & Turnin '' in the Oliver Beene episode `` Oliver & Others '' .