Song Structure Ref
About Song Structure
What this tool does
Music tools identify chords, find song keys, convert BPM between tempos, transpose chord progressions for a capo, calculate note frequencies, and count syllables in lyrics.
Why use this tool
Musicians and producers need quick reference tools during practice and composition. Looking up the notes in a chord, transposing to a singer-friendly key, or syncing a metronome to a target BPM are daily tasks that these tools simplify.
How it works
Chord identification maps note combinations to named chords using interval analysis. Key detection counts sharps and flats against the circle of fifths. BPM conversion applies simple ratio math. Frequency calculations use the A440 equal-temperament formula.
Pro tip
When transposing with a capo, remember that a capo on fret 2 raises the pitch by a whole step. If the original key is G and you put a capo on 2, play the E-shape chords to sound in the key of G.
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