4 years & up. Learn about measures, rhythm, meter and more with the Toccata Blocks Train Whistle and Block Sets. Make learning about musical measures visually exciting and fun by matching the time signature blocks with the correct bases and following it with the correct number of notes and rests to fit into a measure. Use the train whistle to bring the rhythm and meter from the measures to life. Set includes: 32 Pieces, 4 Time signatures, Challenge CD, and a Beautiful, wooden Train Whistle.