by Kirsty Evans
Quadrangle (Porto Franco Records)
Quadrangle is a strange album. Entirely instrumental, it has some jazz elements but overall is almost impossible to pin down to one genre. Maybe “experimental” would be the best description. The sound is open and airy and ambient — music to meditate to, essentially.
At Revolution Cafe (3248 22nd St., San Francisco) on July 23. 9 p.m., free