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Musical notation represents not only pitch but also duration — how long each note is held. The standard durations form a hierarchy: whole note, half note, quarter note, eighth note, sixteenth note, each half the length of the previous. Rests are the silences between notes and have exactly the same duration system. A dot placed after a note extends its duration by half its original value.
Clap or tap note values while counting beats aloud. Use a metronome to feel the subdivision relationships. Draw a duration tree showing how whole notes divide into halves, quarters, and so on.
Pitch tells you what frequency to play; duration tells you how long to sustain it and how long to wait before the next sound. Together they produce rhythm, which is the time-based dimension of music. You already know how to read pitch from the staff and clefs — note durations add the second layer of information that turns a sequence of pitches into an actual piece of music with a recognizable pulse and shape.
The duration system works like the fraction system you already know. A whole note is the reference unit (not always four beats, but one full measure). A half note is half a whole note — two per measure in 4/4 time. A quarter note is a quarter of a whole note. An eighth note is an eighth, a sixteenth is a sixteenth, and so on down. Each level is exactly half the previous: two halves equal one whole, two quarters equal one half, two eighths equal one quarter. This binary subdivision is why the system is learnable as a tree: at each level you split the parent note into two equal children. The visual notation supports this — whole notes are open oval heads, half notes add a stem, quarter notes fill in the head, eighth notes add a flag, sixteenth notes add a second flag.
Rests are the silences, and they have exactly the same hierarchy: whole rest, half rest, quarter rest, eighth rest, sixteenth rest, each half the duration of the previous. A common way to remember the whole rest and half rest: the whole rest hangs from a line (heavy, it falls), while the half rest sits on a line (light, it floats). Rests are not empty time — they are musical events, just as structurally meaningful as sounded notes. A dramatic silence after a climax is a whole rest doing compositional work.
The dotted note extends any note by half its own value. A dotted half note = half note + quarter note = three beats. A dotted quarter = quarter + eighth = one and a half beats. The dot essentially adds the next smaller denomination. This is where the fraction prerequisite helps: adding half of something to itself is multiplying by 3/2. Dotted rhythms are extremely common in music — the lilting dotted-eighth-sixteenth pattern appears in marches, dances, and Baroque overtures — so internalizing "a dot adds half" quickly pays off in reading actual music. Once you can reliably feel the difference between a quarter note and a dotted quarter, you can decode most rhythmic notation without counting every subdivision consciously.
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