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You can practice improvising with C D E F G.
This document has the descriptions of all the performing arts exploratory classes (guitar, keyboard, percussion, and drama).
online metronome"A metronome is a practice tool that produces a steady pulse (or beat) to help musicians play rhythms accurately. The pulses are measured in beats-per-minute (BPM). Most metronomes are capable of playing beats from 35 to 250 BPM. Common uses of the metronome are helping you to maintain an established tempo while practicing, and learning difficult passages."