This Week's 'American Idol' Theme: California Dreaming; 'Song I Wish I Wrote'

Michael Becker / FOX

This Wednesday night, American Idol's last four standing will be “California Dreaming" as they take on chart-topping songs by bands or singers from the Golden State. Also on deck for next week's theme: tunes they wished they had written, according to a tweet by Idol executive producer Nigel Lythgoe.

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Thursday night's results show will feature a pre-taped performance of the Jennifer Lopez hit, "Dance Again" -- the single is currently No. 25 on the Billboard Hot 100 chart. Additional entertainment comes courtesy of season 7 winner David Cook, who'll debut a new song called “The Last Song I’ll Write For You."

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With only three weeks left in the competition, Thursday's results are critical for the final four singers, Joshua Ledet, Jessica Sanchez, Phillip Phillips and Hollie Cavanagh. Whoever gets sent home misses out on the show's coveted homecoming week episode, when the final three singers go to their respective hometowns to much fanfare.

So which songs will the Idols cover? The Mamas and The Papas, The Beach Boys, and Colbie Callait all hail from California. So did the late Jerry Garcia. Will Phillip treat the audience to a Grateful Dead tune? Of course, we're dreaming, but what do you think, Idol Worshippers?

Twitter: @micheleamabile