Conversation so far:
When was The Ronettes' British tour?
In January 1964, the Ronettes left for their first tour of the UK.
How did The Ronettes' first UK tour do?
In January 1964, the Ronettes left for their first tour of the UK, where they made a strong impact from the very beginning.

Question: How long did they tour?
Self-contained rewrite: How long did The Ronettes tour on their first UK tour?