1. The soundtrack from this John Travolta movie was the Number One album for all of August 1978.: Grease
2. Travolta also had a Number One hit duet as a singer that summer - what was it and who did he sing it with?: "You're The One That I Want," with Olivia Newton-John
3. The biggest album of the summer that wasn't a soundtrack was by the Rolling Stones. What was it?: "Some Girls"
4. Donna Summer's "Last Dance" was included on the soundtrack of what movie?: Thank God It's Friday
5. Who sang with Peter Brown on his Top Ten hit "Dance with Me?": Betty Wright
6. Jazz musician Chuck Mangione had an instrumental hit in early summer 1978 with "Feels So Good." What instrument did he play on that song?: The flugelhorn
7. ABBA's big hit that summer featured a multi-part acapella introduction. What was the song?: "Take A Chance On Me"
8. The O'Jays had a Top Ten hit in June and July 1978 with an unusually-spelled title - what was it?: "Use Ta Be My Girl"
9. This Andy Gibb song, the title track from his latest album, was Number One for all of July 1978.: "Shadow Dancing"
10. And this Gerry Rafferty song with a very distinctive saxophone line was Number Two for all of July 1978.: "Baker Street"
11. "Boogie Oogie Oogie" (which has nothing to do with a certain baseball pitcher who was just four years old that year) was a summer hit for what group?: A Taste of Honey
12. Boston released this, its second album, in August 1978.: "Don't Look Back"
13. According to Sweet, what is love like?: Oxygen
14. This Commodores ballad, written in honor of Lionel Richie's mother, hit Number One for two weeks in August 1978.: "Three Times a Lady"
15. Many people at first thought "It's a Heartache" was sung by Rod Stewart, but it really was sung by this Welsh singer.: Bonnie Tyler
16. "Keep your heart open, 'cause love will find a way" sang this band in 1978.: Pablo Cruise
17. Barry Manilow had a story-song hit about a nightclub dancer in the summer of 1978 - what was it?: "Copacabana (At The Copa)"
Bonus: Walter Egan's "Magnet and Steel" featured two famous singers backing him up on the chorus - who were they?: Lindsay Buckingham and Stevie Nicks