Glee showcased some of the most well-executed mash-ups while the show lasted for six seasons. A mash-up is a synchronised song of two tracks, which is a recurring type of song in glee but not as frequent as a duet or a ballad. I’ve posted my list of top ten mash-ups according to the music (obviously) and also the plot of the play, which includes the video and the characters who performed them. Do check them out because some of them include Madonna and Beyoncé ;D
1. Borderline/Open Your Heart – season 1 Ep. “The Power of Madonna”
2. Hit Me With Your Best Shot/One Way or Another – season 3 Ep. “Mash Off”
3. Halo/Walking on Sunshine – season 1 Ep. “Mash-Up”
4. Hair/Crazy In Love – season 1 Ep. “Hairography”
5. Start Me Up/Livin’ On a Prayer – season 2 Ep. “Never Been Kissed”
6. Rumour Has It/Someone Like You – season 3 Ep. “Mash-Off”
7. Centrefold/Hot In Herre – season 4 Ep. “Naked”
8. It’s My Life/Confessions Part II – season 1 Ep. “Mash-Up”
9. Thriller/Heads Will Roll – season 2 Ep. “The Sue Sylvester Shuffle”
10. Survivor/I Will Survive – season 3 Ep.”Hold On To Sixteen”