Heavy cats? Mr. Joe McPhee on tenor, Mr. Joe Morris on guitar, and Mr. Nate Wooley on trumpet. That qualifies as heavy. Each is a leader on his instrument, a bandleader in his own right, and the melding of all four on a free date is all you'd hope for.
This is a drummerless group, which makes Flaten's bass playing stand out all the more. The result is four equal solo voices engaging in dense free counterpoint.
Everybody is in good form. It's something excellent to sink your ears in.