Prelude in C by Bach is, as it turns out, a very pretty prelude piece for a wedding! Most of the music Bach wrote is somewhat complex, and involves restatements of themes happening at the same time as the primary motif, and so tend not to be perhaps as appropriate for most weddings. However, he wrote some prettier simple pieces that work very nicely for a wedding prelude.
His Jesu, Joy of Man’s Desiring, which we offer, is quite nice for either prelude or processional. His Arioso from Cantata 156 has been used quite often, as has his Largo from Concerto no. 5 in F minor. The Prelude in C is quite relaxing in it’s simplicity; it consists of simple arrpeggios, with the highest note of the arpeggios functioning as the melody. I used this piece as well on a lullaby project I recorded recently.