Get good music, help a cause and celebrate the union of two powerful improvising forces, Deerhoof and Wadada Leo Smith. May there be many more such unions.

Here is the worldwide premiere of “Them!,” from Curt Syndor’s upcoming release ‘Deep End Shallow,’ on Out of Your Head Records.

With ‘Alula,’ the ever-thirsty Caroline Davis thrust herself into the company of vital artists at the frontier of jazz.