Brandenburg Concerto No. 5 with a concertino consisting of three instruments. However, throughout the concerto the harpsichord takes the leading role among the soloists, with, for instance, a long solo passage for this instrument near the end of the first movement: neither of the other soloists has a comparable solo passage. In this sense the concerto has been called the first keyboard concerto ever written. Vivaldi, and other composers, had occasionally given solo passages to keyboard instruments in their concertos before Bach, but never had a concerto been written which gave the harpsichord a soloist role throughout on the scale of the fifth "Brandenburg
Twelve Concertos, Op. 7 (Vivaldi) RV Anh. 142 (formerly RV 464); and No. 9 in B-flat major for violin, RV Anh. 153 (formerly RV 373). Twelve Concertos, Op. 7 (Vivaldi) A set of twelve concertos was published by Estienne Roger in 1716-1717 under Antonio Vivaldi's name, as his Opus 7. They were in two volumes, each containing concertos numbered 1-6. Of the set, ten were for violin solo; the other two were for oboe solo. The authenticity of some of the works included has long been doubted by scholars. Three are now considered spurious (i.e. not in fact by Vivaldi) for stylistic reasons. They are: