Alison Krauss & Union Station on the Tonight Show in 2009

Late Show With David Letterman
Monday 4/25: Lupe Fiasco
Tuesday 4/26: the Twilight Singers
Wednesday 4/27: Emmylou Harris
Thursday 4/28: A performance by the cast of Catch Me If You Can
Friday 4/29: Steve Earle

The Tonight Show With Jay Leno
Monday 4/25: Alison Krauss & Union Station featuring Jerry Douglas
Tuesday 4/26: the Airborne Toxic Event
Wednesday 4/27: Buddy Guy
Thursday 4/28: OK Go
Friday 4/29: Moby

Conan
Monday 4/25: Drive-By Truckers (rerun)
Tuesday 4/26: the Black Keys (rerun)
Wednesday 4/27: Taio Cruz (rerun)
Thursday 4/28: Lykke Li (rerun)

Late Night With Jimmy Fallon
Monday 4/25: Darius Rucker
Tuesday 4/26: Twisted Sister
Wednesday 4/27: Dispatch
Thursday 4/28: Tim McGraw
Friday 4/29: Aretha Franklin

Jimmy Kimmel Live
Monday 4/25: Alter Bridge
Tuesday 4/26: Robbie Robertson
Wednesday 4/27: Augustana
Thursday 4/28: the Airborne Toxic Event

Last Call With Carson Daly
Monday 4/25: Sarah Lee Guthrie & Johnny Irion (rerun)
Tuesday 4/26: Girl Talk, Interpol
Wednesday 4/27: the Hours, Lykke Li
Thursday 4/28: Screaming Females
Friday 4/29: Mona

Lopez Tonight
Monday 4/25: Justin Bieber (rerun)
Tuesday 4/26: Ron Artest featuring George Lopez, Fat Joe, B Real, Lenny and Max from Aventura and Taz (rerun)
Thursday 4/28: A performance by the cast of Rock of Ages (rerun)