SPOTLIGHT

'CMA Music Festival'

7-10 p.m. on ABC

Tim McGraw is host of "country's night to rock," taped in June in Nashville with performers including Trace Adkins, Jason Aldean, Billy Currington, Alan Jackson, Kid Rock, Lady Antebellum, Miranda Lambert, Martina McBride, Reba McEntire, Brad Paisley, Kellie Pickler, Rascal Flatts, Darius Rucker, Blake Shelton, Keith Urban, Carrie Underwood, Zac Brown Band and more.

NEW TONIGHT

'Masterchef'

7 p.m. on Fox

The remaining contestants cater what's billed as a high-end wedding, but somebody manages to lose the main course.

'America's Got Talent'

8 p.m. on NBC

Five acts move into the Top 10.

'Dark Blue'

8 p.m. on TNT

Jaimie poses as an addict in a drug sting.

'Plain Jane'

9 p.m. on the CW

In the season finale, a woman who lost more than 100 pounds gets a new look.

'Psych'

9 p.m. on USA

That's Nestor Carbonell, the ageless Richard on "Lost," as a criminal profiler whose skills rival Shawn's — and who may also compete with him for Juliet (Maggie Lawson). Also a guest tonight is Curt Smith of Tears for Fears.

'Top Chef: Washington, D.C.'

9 p.m. on Bravo

Astronaut Buzz Aldrin helps judge a space-food challenge.