During the season 8 finale, it wasn't just the top 3 that had duets.
I've always thought that Adam attracted more than the usual number of big-name finale guests.
That may be why so many of the finalists had special numbers.
From Wiki:
en.wikipedia.org/wiki/American_Idol_(season_8)Finale
The finale took place at the Nokia Theatre on May 20, 2009.Musical Performances:(
# tells place contestant finished)
"So What" (Pink song) - Top 13"Permanent" (David Cook) - David Cook
"Cue the Rain" (Queen Latifah) - Queen Latifah and Lil Rounds (
#7)
"I'm Yours" (Jason Mraz) - Jason Mraz, Anoop Desai (
#6) and Alexis Grace (
#11) (the rest of the top 13 minus Kris and Adam joined at the end of the song)
"Kiss a Girl"(Keith Urban) - Keith Urban and Kris Allen
"Glamorous" (Fergie) - Top 13 girls (Alison Iraheta, Lil Rounds, Megan Joy, Alexis Grace and Jasmine Murray)
"Big Girls Don't Cry" (Fergie) - Fergie with Top 13 girls
"Boom Boom Pow" (The Black Eyed Peas) - The Black Eyed Peas
"Time After Time" (Cyndi Lauper) - Cyndi Lauper and Alison Iraheta (
#4)
"Hello" (Lionel Richie) - Danny Gokey (
#3)
"Just Go" (Lionel Richie) - Lionel Richie and Danny Gokey (
#3)
"All Night Long" (Lionel Richie) - Lionel Richie and Danny Gokey(
#3)
"Beth" (KISS) - Adam Lambert
"Detroit Rock City" (KISS) - KISS and Adam Lambert
"Rock and Roll All Night" (KISS) - KISS and Adam Lambert
"Black Magic Woman" (Santana) - Carlos Santana and Matt Giraud (
#5)
"Smooth" (Santana) - Carlos Santana and Top 13
"Pretty Flowers" (Steve Martin) - Megan Joy (
#9), Michael Sarver (
#10) with Steve Martin playing banjo
"Do You Think I'm Sexy" (Rod Stewart) - Top 13 guys (Kris Allen, Adam Lambert, Danny Gokey, Matt Giraud, Annop Desai, Scott MacIntyre, Michael Sarver, Jorge Nunez)
"Maggie May" (Rod Stewart) - Rod Stewart
"We Are the Champions" (Queen) - Queen, Kris Allen and Adam Lambert (later joined by the rest of the top 13)
"No Boundaries" (Kris Allen) - Kris Allen
Idol Awards:
Outstanding Male - Nick Mitchell (as Norman Gentle) "And I'm Not Going" (Dreamgirls)
Best Attitude Katrina Derrel (bikini girl) "Vision of Love" with Kara DioGuardi
Outstanding Female - Tatiana Del Toro "Saving All My Love"
FINALE So What? (Top 13 Opening Number) www.tudou.com/programs/view/MpfkBIfCuqk/Beth / KISS Medleywww.tudou.com/programs/view/aU7L6Kz10D0/CARLOS SANTANA - BLACK MAGIC WOMAN - AMERICAN IDOL 2009 - FINALE - HDrutube.ru/video/private/e182fb78c94194dcdf3cfe2c900defad/?p=w6Gbikv6QvR3fUvhRVbmoQ==American Idol Season 8 The Guys of the Top 13 Do Ya Think I'm Sexyrutube.ru/video/private/e9cfc8539974785cc7a473bfcffa892b/?p=bH0pTQHa9ugsqwv7c7NqoA==We Are The Champions (Duet) Queenwww.tudou.com/programs/view/mi7C8xNRMM0/