Conversation so far:
When did Glenn Frey begin his solo career?
After the breakup of the Eagles in 1980, Glenn Frey embarked on a successful solo career.
Did Glenn Frey collaborate with anyone?
In 1984, Glenn Frey recorded in collaboration with Harold Faltermeyer.

Question: what was the song?
Self-contained rewrite: What was the song Glenn Frey recorded in collaboration with Harold Faltermeyer?