If you love music, check into Hollywood Hotel. The story's about a filmland newbie (Dick Powell) caught between a spoiled star (Lola Lane) and her likeable look-alike (Lola's sister Rosemary Lane). But the movie's about Busby Berkeley's ace direction - and music, music, music. The Film opens with the jubilant debut of Tinseltown's unofficial anthem "Hooray for Hollywood." The jaunty "Let That Be a Lesson to You" shows off Berkeley's snazzy-jazzy mastery of editing and camera angles. And Benny Goodman and His Orchestra - including Harry James on trumpet and Gene Krupa on drums - swing, swing, swing into "Sing, Sing, Sing."