This can usually be found paired with Vegetable Man on PF bootlegs, and is a fairly good piece of late Barrett Floyd. When Barretts solo albums where being reissued - I think as part of the Opal compilation record - it was intended that both Scream Thy Last Scream and Vegetable Man would be included, but the rest of the group wouldn't allow it.

Don't know why not, it was apparently thought indecent, as it showed Barrett in a poor state of mental health, but is it any more so than a couple of other PF tracks or some of the recordings done for Madcap Laughs and Barrett? But its not Barrett at his very best though.