Glee features on-screen performance-based musical numbers, most of which are cover versions of popular songs, with genres ranging from R&B and pop to country and show tunes.

Included on the track listing is a cover of The All-American Rejects' "Gives You Hell", which reached number one in Ireland, a first for the group.

A limited edition EP Glee: The Music, Love Songs, sold only at Target stores,[8] was released at the end of the year, and did not chart.

The cast holds the record for most charted songs by an act in the 53-year history of the Billboard Hot 100, with 207 appearances as of October 2013.

The cast has also put 51 singles in the top 40 on the Billboard Hot 100, and are ahead of The Beatles as of October 2013, behind only Lil Wayne with 64, Elton John with 57 and Elvis Presley with 80.