By Michael Ausiello
August 09, 2010 at 10:48 PM EDT

Image Credit: Frank Ockenfels/The CW; Richard Phibbs/The CWTwo One Tree Hill characters are about to pay an unexpected visit to Portland.

Sources confirm to me exclusively that new Tuesday companions One Tree Hill and Life Unexpected will stage a crossover this fall when OTH songbirds Haley (Bethany Joy Galeotti) and Mia (Kate Voegele) guest-star on the Oct. 12 episode of LUX.

From a creative standpoint, the stunt actually makes sense. Haley and Mia will travel to Portland to perform at a music festival sponsored by Cate’s (Shiri Appleby) radio station. “Haley and Cate are surprised to learn that they share a similar back story [as] mothers,” teases an insider.

Business-wise, The CW is no doubt hoping some of OTH‘s 3 million viewers will check out LUX.

Thoughts? Are you cool with Tree Hill invading LUX‘s turf—particularly if it exposes more eyeballs to the sophomore gem? Or is this the case of two great tastes (okay, one great taste and one mediocre taste) that don’t go great together? Sound off below!