Formed from the same group that performed Broadway's "Beatlemania," Rain has been performing as the fab four since 1977. While they don't sound exactly like the Beatles, it's OK. They strive to recreate every detail of the music--from vocal inflections to notes of cowbell--and the product sounds like genuine Beatles, only different. For instance, Rain tends to play some songs more down-tempo (probably to pace themselves during the two-plus hours of the show) and Joey Curatolo seems to have a slightly deeper voice than Paul McCartney. Integrating live video, old Beatles footage on large screens and elaborate '60s costumes, Rain delivers energy, nostalgia and good music.