what kind of music career did he have?
He released a single "You Look Marvelous" which had accompanying music video;  features Crystal in character as his SNL persona of talk show host Fernando Lamas.
Billy Crystal
 as well as the single "You Look Marvelous", which peaked at No. 58 on the "Billboard" Hot 100 in the US, and No. 17 in Canada. The title track "You Look Marvelous" would also have an accompanying music video that debuted on MTV. Both the song and video features Crystal in character as his SNL persona of talk show host Fernando Lamas. 
who played helen in when harry met sally UNANSWERABLE is it a film? Yes, it is a 1989 American romantic comedy film. who is the protagonist in it? Harry how much money did the film make? $1,094,453 in 41 theaters was it released on dvd? Yes, on January 9, 2001 what is the film about? The story follows the title characters from the time they meet in Chicago just before sharing a cross-country drive, through twelve years of chance encounters in New York City. The film raises the question "Can men and women ever just be friends?" who played the role of protagonist in it? Billy Crystal name a few sports he plays? He played minor league for one day. did he host any award ceremony? Yes, he hosted the Academy Awards broadcast a total of 9 times. did he have any cameo in a film or a tv series? UNANSWERABLE is he a singer too? UNANSWERABLE
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Billy Crystal [SEP] Albums and music career
Due to the success of Crystal's standup and SNL career, in 1985 he released an album of his stand-up material titled "Mahvelous!", as well as the single "You Look Marvelous", which peaked at No. 58 on the "Billboard" Hot 100 in the US, and No. 17 in Canada. The title track "You Look Marvelous" would also have an accompanying music video that debuted on MTV. Both the song and video features Crystal in character as his SNL persona of talk show host Fernando Lamas. The video features Lamas cruising around in what was at the time the world's longest stretch limousine, built by custom coach designer and builder Vini Bergeman, surrounded by models in bikinis.