Start from the sounding key
Decide what pitch range suits the singer before choosing your favorite guitar shapes. A capo raises the pitch of the strings, so familiar fingerings can produce a different sounding key. For example, a C shape with capo two sounds as D major. Write both the sounding key and the shape reference in your notes. This keeps communication clear with a pianist or bass player, who normally needs the sounding chords rather than the names of the grips under your fingers.
Compare more than one workable setup
A song in one sounding key may be playable through several capo and shape combinations. Test a short verse and chorus with two reasonable setups. Listen to the register and resonance as well as the difficulty of the changes. A higher capo can make the guitar brighter and reduce the available fretboard length, while a lower position may provide a fuller low range. Check any important bass movement or melodic figure; an easy main progression is not enough if the signature phrase becomes impractical.
Verify tuning and the complete form
Place the capo close behind the fret without sitting on the fret itself, and check tuning after it is attached. Excessive pressure or uneven placement can affect intonation. Confirm how AudioChords displays capo-related labels before playing against the recording. Then rehearse the entire arrangement, including the bridge and ending, because an unexpected chord can change which setup feels easiest. Choose the position that balances voice, sound, and reliable movement. The best capo choice is an arrangement decision with clear notation, not simply the position that turns the first chord into a familiar shape.