Is the ritornello principle based on Alternating sections from soloist with for full orchestra?

Yes, the ritornello principle is based on alternating sections from a soloist with the full orchestra. The concerto grosso, a Baroque musical form, commonly uses the ritornello principle, where a small group of soloists (the concertino) alternates with the full orchestra (the tutti or ripieno). The ritornello theme, played by the full orchestra, is interspersed between contrasting episodes played by the soloists. This alternation of tutti and solo sections creates a dynamic and engaging musical structure.