The seven ricercares form a milestone in the history of the instrument, being the very first compositions for unaccompanied cello.

- First edition of Gabrielliís cello works in a single volume,
- Earliest works for unaccompanied cello,
- Scordatura and pitch notation.

Ricercares 1 to 7 for solo cello / Canon for 2 cellos / Sonata in G major for cello and basso continuo (1st and 2nd version) / Sonata in A major for cello and basso continuo.