Which singer sang the theme song from the film "The Goodbye Girl"?

"Goodbye Girl" is a song by David Gates, lead singer of Bread, which was released as a single in December 1977 following the premiere of the hit film of the same name. As the theme song to the film, the song reached number 15 on the "Billboard" Hot 100, becoming the biggest hit of Gates' solo career.

David Ashworth Gates (born December 11, 1940) is a retired American singer-songwriter, guitarist, musician and producer, frontman and co-lead singer (with Jimmy Griffin) of the group Bread, which reached the top of the musical charts in Europe and North America in the 1970s.

Bread was an American soft rock band from Los Angeles, California. They had 13 songs chart on the "Billboard" Hot 100 between 1970 and 1977

"The Goodbye Girl" is a 1977 American romantic comedy-drama film written by Neil Simon and starring Richard Dreyfuss, Marsha Mason, Quinn Cummings and Paul Benedict. The film centers on an odd trio of characters: a struggling actor who has sublet a Manhattan apartment from a friend, the current occupant (his friend's ex-girlfriend, who has just been abandoned), and her precocious young daughter.

Richard Dreyfuss won the 1977 Academy Award for Best Actor for his performance. . At the time, he became the youngest man (at age 30) to win an Oscar for Best Actor. Both Mason and Cummings were nominated for Oscars.

The film became the first romantic comedy to earn $100 million in box-office grosses.