Progressions in F — Cello

Every chord the key of F owns, mapped along CGDA by finger and position.

F major harmonises to F – Gm – Am – A# – C – Dm – E°; F minor to Fm – G° – G# – A#m – Cm – C# – D#. Each chord links to its tone map on the Cello, so a tune in F becomes a short list of places the hand needs to be.

The useful question in a key is which open strings it agrees with. In F, check the chords against the open C and A — a key that leaves an open string ringing under the melody is a key this instrument was built for.