Conversation so far:
who sang in the court of the crimson king
Greg Lake was lead vocalist of the band King Crimson.
when was the album In the Court of the Crimson King released
In the Court of the Crimson King was released on 10 October 1969.
was the album In the Court of the Crimson King influential
The album In the Court of the Crimson King is one of the first and most influential of the progressive rock genre.
how did the album In the Court of the Crimson King do on the charts
The album In the Court of the Crimson King reached number five on the UK Albums Chart and number 28 on the US Billboard 200 and was certified Gold.

Question: what is the length of the album
Self-contained rewrite: what is the length of the album In the Court of the Crimson King