Amanda Seyfried performed at the 81st annual Academy Awards ceremony. She joined Mamma Mia co-star Dominic Cooper, High School Musical stars Vanessa Anne Hudgens and Zac Efron, as well as host Hugh Jackman and singer Beyonce.

The ceremony was held February 22, 2009, at the Kodak Theater in Los Angeles, California.

1. 2009 Academy Awards: February 22, 2009 at 8/7c
2. Network: ABC
3. 2009 host: Hugh Jackman
4. Venue: Kodak Theatre in downtown Hollywood

Despite the Academy's penchant for secrecy about who will perform and present at the Oscar production, Vanessa Anne Hudgens, Amanda Seyfried, Hugh Jackman and Beyonce were revealed early-on to be performers for the 81st Academy Awards show.

Peter Gabriel declined to perform his Wall-E-nominated song "Down To Earth," in protest, because the producers would only allow a segment of the song to be sung.Telegraph: Peter Gabriel Pulls Out... (February 16, 2009) Only 32 million viewers watched the 80th Oscar presentation, so the network increased the performing line-up with younger stars to attract a greater audience.MTV: Will Zac Efron... (February 18, 2009)

• YouTube Video: 2009 Oscars: Hugh Jackman and Beyonce Performance