Beetles is a cause and effect training program designed for use by students with cognitive and developmental disabilities. The Beetles play songs using the choice of 20 instruments selected by the user. The program is accessible by mouse, touch screen, and switch and enables the user to give each Beetle a different instrument and hear the group play a song. The user can then change instruments and hear the song again. The program provides 55 ready-made songs in a variety of styles, including American, folk, classic, modern, nursery, and Christmas. The program uses standard MIDI files, enabling other songs to be downloaded to customize the program. COMPATIBILITY: For use on IBM and compatible computers. SYSTEM REQUIREMENTS: Windows 3.1, 3.11, or 95; 8 megabytes RAM; 486, 66 MegaHertz (Mhz) or faster processor; sound card; CD-ROM drive;and a 256-color monitor.