Bassey joins a
stellar list of previously announced Oscar performers including Adele, Norah Jones and Barbra Streisand; and presenters including «The Avengers» cast members Robert Downey Jr., Samuel L. Jackson, Chris Evans, Jeremy Renner and Mark Ruffalo; returning 2011 Oscar winners Jean Dujardin, Christopher Plummer, Octavia Spencer and Meryl Streep; co-stars Mark Wahlberg and Ted; and, special
guest appearances including Joseph Gordon - Levitt, Daniel Radcliffe, Channing Tatum and Charlize Theron.