“Sweet Dreams” was one of the first 45s I bought when I went to England in the late 60s of the recently departed millennium.
Possibly saw it on Top of the Pops, certainly heard it on the radio and was definitely stunned by its complexity and bite.
Never saw Tull live and isn’t it a good thing that we’ve got German television around to archive these gems?
You Must Be From Away 
I was fortunate to see Tull live on their “War Child” tour. I was already a fan and I had a great seat in the fourth row. They definitely put on a show. John is a big Ian Anderson fan, and pretty knowledgeable about his works. I’ll show him your post.