Black Birds is the title of the second work Aho wrote for accordion. In her first piece, in particular, she sought the technical limits of the instrument – in this one, she did so in terms of sound. Black birds consists of five parts, all referring to birdsong.

Accordion sonata no. 2:

1. Birds of light
2. Birds of the Night
3. Strange Birds
4. Birds of Desolation
5. Black Birds