I believe that J.S. Bach wrote 6 Brandenburg Concertos:-

* Brandenburg Concerto No. 1 in F major, BWV 1046 * Brandenburg Concerto No. 2 in F major, BWV 1047 * Brandenburg Concerto No. 3 in G major, BWV 1048 * Brandenburg Concerto No. 4 in G major, BWV 1049 * Brandenburg Concerto No. 5 in D major, BWV 1050 * Brandenburg Concerto No. 6 in B flat major, BWV 1051

I think it's in D Major

Bach Brandenburg Concerto #2 in F, BWV 1047

What combination of ritornello and concertino do you hear in Brandenburg concerto no 5