Which instruments and musical groups are featured in the Brandenburg Concertos?

The Brandenburg Concertos by Johann Sebastian Bach are masterful examples of the concerto grosso genre, which features a dialogue between a group of soloists and a small orchestra. The instrumentation varies significantly across the six works:1

• No. 1: Features a large group of soloists, including one violin, three oboes, one bassoon, and two horns.1
• No. 2: Includes a high trumpet solo, along with solos for recorder (or flute), oboe, and violin.1
• No. 3: Features three violins, three violas, and three cellos.1
• No. 4: Soloists include two flutes and a violin.1
• No. 5: Features a flute, a violin, and a harpsichord.1
• No. 6: The only concerto in the set without violins; it spotlights the lower strings, supplemented by the harpsichord.1

Across the collection, the harpsichord is consistently used to realize the basso continuo.12