A suspenseful song that builds tension as it progresses, The closest genre I could think of was ambient.

The final track in the album, Has a nice solid 60 bpm, so you can watch the notes play as the timer counts up lol.

The party's over.

Enjoy!

Check out the track here: https://djroboquis.bandcamp.com/track/usted

And the album here: https://djroboquis.bandcamp.com/album/party

And on Soundcloud here: https://soundcloud.com/brenden-lewis-896689434/usted