The piece is scored for two oboes, one bassoon, strings, and continuo. Walsh also published a 'No. 4b' concerto erroneously under the name of Handel but it was withdrawn a few months later, possibly at Handel's request. Despite lack of division into tutti and concertino and the addition of an extra allegro movement at the very end, the fifth concerto follows the traditional Italian model most closely of all the Op. 3 works. Walsh at first only published the first two movements, but because the work had already been known in its entirety, it is probable that Handel requested it be published in full. The piece is scored for two oboes (originally one), one bassoon, strings, and continuo. The sixth and final concerto has just two movements, the Vivace, whose music is extracted from the 1723 opera Ottone, and the Allegro, which is also Handel's first published piece for organ and orchestra, and is taken from the overture to the 1712 opera Il pastor fido. The piece is scored for two oboes, one bassoon, strings, and continuo. The Allegro of the concerto was publisher Walsh's 'commercial' announcement of the forthcoming edition of Handel's opus 4: a set of organ (or cembalo) concertos.