Complex sentence: With the Sons of the Pioneers, he made guest appearances in high-budget A-movies like "Hollywood Canteen", with Bing Crosby in "Rhythm on the Range" and in the Walt Disney short, "Melody Time".
Split into simpler sentences: With the Sons of the Pioneers, he made guest appearances in high-budget A-movies like "Hollywood Canteen" and "Rhythm on the Range" with Bing Crosby. He also appeared in the Walt Disney short, "Melody Time".