This final offering of ABC Afterschool Special's second season provides youngsters with a brisk and entertaining introduction to classic music. Tim Conway stars as a whimsical janitor who, while laboring away at the Hollywood Bowl, conjures up an imaginary orchestra. Also appearing is Ruth Buzzi as a cleaning lady who falls for the "conductor" in the course of his fantasy concert. Animated sequences are used to bring to life such familiar compositions as Glinka's Russlan and Ludmilla overture, Strauss' Die Fledermaus overture, Rossini's William Tell, Tchaikovsky's Romeo and Juliet suite, Verdi's Anvil Chorus, and Mozart's Symphony No. 40 in G Minor.