Lead Line Chord Notation, also referred to as Topline Notation is a shorthand notation convention that is sometimes used for rock, jazz and pop guitar or keyboard charts.
Lead Line / Topline notation is a good way to get the chord voicings you are looking for as a composer or arranger, particularly if you don’t actually play guitar (or piano); it allows you to specify melodic motion of the chords without having to supply details of voicings you may or may not know are practical (or possible) on that instrument.
To create this type of notation, visually, the stems are extended past the noteheads to show that the chords are voiced below (or above) the written lead notes. Here is an example:
Let’s take a look at a couple of different ways to create this type of notation in Finale.
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