The service not only displays sheet music for locally uploaded songs ... “HarmTrace uses a model of Western tonal harmony to aid in the chord selection,” says De Haas.

There’s a nice G major over A chord at the end of the ‘you had a busy day today ... as it features both top-down video and a sheet music display for those who can read. The production values are high ...

dynamic sheet music – use a qr code generator free online to embed chord progressions, alternate arrangements, or audio guides into printed music; exhibition extensions – qr code maker tools ...