Which 1978 Andy Gibb song spent seven weeks at No. 1 on the Billboard Hot 100?

“Shadow Dancing” spent seven weeks at No. 1 on the Billboard Hot 100 for Andy Gibb.

The song was written by Andy Gibb with his brothers Barry, Robin, and Maurice Gibb of the Bee Gees. It was recorded during the period when the Bee Gees were at the height of their Saturday Night Fever-era success.

Released in April 1978, “Shadow Dancing” rose to No. 1 in June and remained there for seven weeks. It was Gibb’s third consecutive U.S. chart-topper, following “I Just Want to Be Your Everything” and “(Love Is) Thicker Than Water.”

Andy Gibb was the younger brother of the Bee Gees, but “Shadow Dancing” was a solo release. That distinction separates it from the group’s own Hot 100 singles.