Last year City Lights published a new edition of McClure's 1964 Ghost Tantras. This early work of McClure's is composed in a partially invented vocabulary that he calls "beast language" (guttaral, expressive), which brings to mind Khlebnikov's zaum "Incantation by Laughter" (McClure references Mayakovsky). McClure wanted to find a level of language that invoked our animality and the recordings he made with lions in 1964 and 1966 remain powerful poetic documents.
This mp3 is a 1964 reading of "Tantra" 49 from that book; the recording was made by Bruce Conner. (4:07): MP3 The better known video, also a reading of "Tantra" 49, is an excerpt from a 1966 episode of Richard O. Moore’s television series U.S.A. Poetry.
During a double reading with Robert Duncan at San Francisco State University in 1983, Michael McClure performed an ode to Jackson Pollock. The recording of the Duncan/McClure event is available, as of today, as segmented audio at PennSound (thanks to the precise work of Anna Zalokostas). Here is your link to McClure's "Ode to Jackson Pollock": MP3.