Cello or Bassson Part for George Frideric Handel's Concerto Grosso In G Op.6 No.1. The Concerti Grossi Op.6 HWV 319-330 are 12 concerti for solo instruments (usually Violins and Cello) accompanied by a four-part string orchestra and Cembalo continuo. Originally published in 1739 they were written to be played during performances of Handel's oratorios and odes and are amongst the finest examples in the genre of Baroque Concerto Grosso.