I was (actually still am) a huge Groundhogs fan and went to see them at the Sports Arena in Atlanta. I can’t remember the date - early ‘70s - was hoping to find it in this forum. Trapeze was on the bill. I had heard Black Cloud but was absolutely blown away by them. I bought the album and still listen to it today - often. Have followed and loved Glen’s work ever since. Hope to read and share experiences with you - cheers!