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is explained in depth in the LilyPond manual. For example, in absolute mode, a'4 is an A, one octave up from the base A (A3 in scientific pitch notation), of quarter note length.
* Commands usually begin with a backslash (such as \time, or \slurUp). The function of the command in question determines where the command is placed; for example, if the command is used to indicate a fixed dynamic on a specific

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