Complex sentence: The album was Bruce's second solo album to be released (late 1970 in the U.K. & early 1971 in the U.S.) but first to be recorded, in August 1968, while he was still a member of the rock power trio Cream.
Split into simpler sentences: The album was Bruce's second solo album to reach the market; it was released in the United Kingdom in late 1970, and in the United States in early 1971. However, it was his first solo album to be recorded, as it was recorded in August 1968, while Bruce was still a member of the rock power trio Cream.