"I Guess I'll Always Love You" is a 1966 single by the Isley Brothers, released on Motown's Tamla label, and is a HollandâÂÂDozierâÂÂHolland composition. In the US, the single made both the Hot 100, and R&B singles chart.
The Isleys' version went to number 45 in the United Kingdom, when originally released in September 1966 (TMG 572) and was then reissued again in 1969 (TMG 683) peaking at number 11, a much bigger hit than it ever was in the United States.