Why baroque music can be hard to get into, and why you shouldn't give up if you don't like a piece and find a different recording.
Continuo. Continuo, for those don't know, is the written bass line intended to be played by a variety of instruments. There's always suggestion and common practices for who plays the bass line, but it often changes and there often lack very 'hard' rules about what can perform the conituo part. I'm a continuo player (I play theorbo) so my job is to play the bass line and improvise over it to provide an accompaniment for the soloist(s). Sometimes I'm given more explicit directions on exactly what to play, but usually I'm given a bass note and sometimes a harmony (figured bass).
So sometimes when you hear a piece and not like it, it might just be the performance. And with baroque music there's tons of variance between performances, much of it because of how much variance there can be in the continuo parts.
An example here is Handel's flute sonata in e-minor largo done with just flute and theorbo taking the continuo, and one version with harpsichord and viola da gamba both taking the continuo line.