Tom Logan likes musicals, and thank goodness, because every time he decides it’s show time, we get to hear some of the best singers in town perform in one of America’s best-loved musical genres. And probably, if it weren’t for Logan, these people would only be singing once a week at church, or in the shower.

Luckily, this weekend, Logan brings a local all-star cast to the Penobscot Theatre in a concert of musical selections from the Tony Award-winning shows “The Phantom of the Opera” and “Les Miserables.” As a benefit for the theater’s Creative Arts Program, which Logan and choreographer Aundrea Wilkes run in the summer for young actors ages 5-18, more than 50 singers have lent their voices to this evening of song.

Nearly every number is generally lovely or fun, and those that don’t qualify for either category would have been better left out of the show altogether.

All of the romantic songs are lovely. In “The Phantom” excerpts, such as “Angel of Music” and “Music of the Night,” soprano Bridget A. Larson and baritone Keith Chew go with all the vocal sound and fury of Andrew Lloyd Webber’s grandiose score. They vocally dominate the first half of of the show, which is devoted entirely to “The Phantom.”

In several of the numbers, however, dancers Todd Greenquist and Jennifer Monahan perform steamy silent ballets (choreographed by Wilkes). With sweltering intensity, Greenquist fawns over the light-footed Monahan, whose resemblance to Sarah Brightman (who originated the role of Christine) is striking. All anyone could have possibly been thinking watching these two during “All I Ask of You” was: Are they ever going to kiss?

The second half of the show is more fun, with the rousing music of “Les Miz.” In one of the longest-ever renditions of “Castle on a Cloud,” Amy Torrey, child soloist Ashley Emerson, and a chorus of dirty-faced children beam with dreamy sweetness. The group returns for “Little People,” led by Rebecca Ingalls, who is refreshingly bright and plucky.

Luke Hedger takes over the stage in “Master of the House,” and it’s great fun seeing how this cast bawdily interprets the scene of a French inn in 1823. Samuel Lanham sounds like the voice of God (or at least a little like Colm Wilkinson, the London Valjean) in “Who Am I” and “In My Life.” And during the chorus numbers, the spirited community cast shakes the walls with their powerful voices and sincerity.

All performances at the Penobscot Theatre are sold out, but seats may be available for walk-ins. Some standing-room-only tickets will also be sold. For more information, call 942-3333.