Time Signatures Music Fundamentals   William Wieland
Amount of music per measure:
—   2 quarter notes
—   5 eighth notes
—   3 quarter notes
—   6 eighth notes   (Rhythm Examples)
—   4 quarter notes
—   7 eighth notes
To distinguish betweenand, determine if the measure is divided into 3 quarter notes or 2 dotted quarter notes.
In other words, are eighth notes beamed in pairs of 2 or groups of 3?

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Note durations if the beat is the quarter note or if the beat is the eighth note or half note.