By Michael Slezak
Updated May 04, 2010 at 12:00 PM EDT

Image Credit: Michael Becker/Fox; Francis Specker/LandovWhenever American Idol swings into big-band mode, great things happen. Season one gave us Kelly’s “Stuff Like That There” and Tamyra’s “Minnie the Moocher.” Season five found Paris nailing “These Foolish Things,” Daughtry changing gears on “What a Wonderful World,” and Katharine tearing up “Someone to Watch Over Me.” And last year’s Rat Pack night found Kris, Adam, Allison, Matt, and Danny in terrific vocal form. So say what you want about “relevance” or “being current” — don’t get me wrong, I’d love a “songs written in the post-2000 era” night — you can’t blame Ken Warwick & Co. for taking a stroll down Standards Lane. [SPOILERS AHEAD, west coast readers!]

Alas, tonight’s telecast — with guest mentor Harry Connick Jr. arranging the songs of Frank Sinatra for season 9’s Top 5 contestants — proved to be something of a mixed bag. Casey James disappeared before our very eyes and channeled a goat being led to slaughter. Aaron Kelly wandered around the stage like a foal separated from its mother. Crystal Bowersox squawked like a mildly peeved goose when the judges didn’t recognize her authoritaaay. Only Lee DeWyze and Michael Lynche got uniformly solid scores from the foolios of the judges’ panel, but all I can say is those dudes are lucky #SignMattGiraud didn’t wait an extra year to audition for the show.

Anyhow, I’ve got a full-length TV Watch recap to write, which will post early tomorrow morning on [UPDATE: Here it is.] In the interim, share your thoughts on Sinatra Night in the comments section, and to get all my Idol news and commentary, follow me on Twitter @EWMichaelSlezak.

Tonight’s Set List

Aaron Kelly” “Fly Me to the Moon”

Casey James: “Blue Skies”

Crystal Bowersox: “Summer Wind”

Mike Lynche: “The Way You Look Tonight”

Lee DeWyze: “That’s Life”