Tortoise Question

About 3 or 4 songs into their set last Saturday at the Black Cat they played the best song of the evening. In my mind at least. It sounded almost like a nursery rhyme without lyrics. The keyboard sounded like a harpsichord(?) or a children's play piano.

What song is this?
Crest? That has a harpsichord effect in it but I'm not sure as to how far into the set it was played.
Yes! Crest. Just looked it up on Amazon. That song made my evening.