Who is the original singer of "I Go Crazy"?

Original singer of I Go Crazy is Paul Davis, American singer-songwriter who wrote and recorded it in 1977, and it became his biggest signature hit and one of longest-charting songs on Billboard Hot 100. Paul Davis released I Go Crazy on his album Singer of Songs Teller of Tales, and single peaked at number 7 on Billboard Hot 100 and spent 40 weeks on chart, setting record at time for longest stay on Hot 100, later covered by many artists but original is Paul Davis. Song is soft rock ballad about heartbreak and longing, with soulful vocals and smooth melody, becoming classic of 1970s adult contemporary. Many people know cover versions, including Lee Greenwood and others, but Paul Davis is original writer and performer. Paul Davis was from Meridian Mississippi, known for blending pop, rock, and country, and I Go Crazy remains his most famous song, often played on soft rock radio. He also had other hits like Cool Night and 65 Love Affair, but I Go Crazy is definitive. So original singer is Paul Davis, who wrote song about emotional aftermath of breakup, and his version is considered definitive original that all covers are compared to, establishing his legacy as singer-songwriter.