In 2004, Ulvaeus appeared as a backing singer in Agnetha Fältskog's comeback single "When You Walk in the Room".
"When You Walk in the Room" was the second single from Agnetha Fältskog's 2004 album, My Colouring Book, her first in 17 years.
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It was accompanied by a music video, featuring Dick Clark, and depicting Tillis in a mid-1960s appearance on American Bandstand.
Hollywood Walk of Fame | The Room | Walk the Line | A Walk to Remember | The Long Walk to Finchley | Walk to Canossa | Walk This Way | Room 222 | Orange Walk District | A Room for Romeo Brass | You'll Never Walk Alone | Walk on the Wild Side (Lou Reed song) | The Viper Room | The Room (film) | One-room school | Leith Walk | The War Room | San Antonio River Walk | Purcell Room | Panic Room | Canada's Walk of Fame | 20 kilometres race walk | You'll Never Walk Alone (song) | Walk on the Wild Side | walk | Twin Peaks: Fire Walk with Me | Room 401 | Dead Man's Walk | Cheyne Walk | The Room (play) |