Effective for high school, middle school and upper elementary chorus (choir)♪ CHORUS FUN WARM-UP .mp3 Sing-a-long Accompaniment Recording♫ Please note: YOU ARE PURCHASING A SOUND FILE. A really fun one!♫ The preview is a singing example. The download is a clean .mp3 file.♪ Play this .mp3 file while your students sing! This allows you the freedom to walk around the room and listen to, assess and interact with your students - matching pitch, volume and strength of voice, vocal timbre, and vocal