It doesn't look like this has been posted yet. It is the untitled cassette by Two Daughters released in 1980 on Methane Music. I am not sure how many copies were pressed, but I rarely see it offered for sale.
To my knowledge, Two Daughters have only appeared on two other releases. A substantially edited version of 'Return Calls - We Are' can be found on the Cherry Red compilation, "Perspectives and Distortion". Their only LP, "Kiss the Cloth/Gloria" was released in 1981 on Anthony & Paul Records, a sub-division of United Dairies Records, the label run by Stephen Stapleton of Nurse with Wound. Overall, I think I like the music on this cassette more than the LP.
I haven't located much info on Two Daughters. I presume there were two members, Anthony & Paul. The liner notes to the compilation mention Jon More on clarinet. Does anyone have more info on this sadly short-lived group?
For anyone familiar with the LP or the compilation piece, the quieter moments there will give you an idea of what the music on some, but not all, of this cassette is like. Many tracks have guitar and/or vocals/chants run through a vibrato effect. There is percussion on a couple tracks, one of which has a 'ritual' feel to it when accompanied by chanting.
The clarinet on 'Return Calls - We Are' reminds me of Electroscope, particularly their limited cassette on Boa. Not sure if this is the appropriate audience, but I can upload a copy of that as well. If anyone desires, contact me via the comments.
I have a copy of their LP for sale. Anyone interested should check out the link to my Atlantis or GEMM site for more details.