Conversation so far:
who plays lead guitar on oh sweet nuthin
Doug Yule plays lead guitar on Oh Sweet Nuthin’
when was The Velvet Underground formed?
The Velvet Underground formed in 1964.
is The Velvet Underground still active?
The Velvet Underground was last active in 1996.

Question: what happened in 1973?
Self-contained rewrite: what happened in 1973 to The Velvet Underground?