The Praeludium in G minor, BuxWV150 has much in common with that in D major, BuxWV139, although it has three fugues instead of one. It begins with an improvisatory passage (here, though, of an imitative character and unfolding over a long tonic pedal) followed by a four-voice fugue; a sustained passage (introduced by a short pedal trill); and two more fugues, the first lively and short (its subject consisting almost entirely of semiquavers) the second more solid in character.
from notes by Relf Clark © 2008
