What was Frank Sinatra's first number-one hit on the Billboard Hot 100?

Frank Sinatra's first number-one hit on the Billboard Hot 100 was Strangers in the Night. His recording topped the U.S. chart in 1966 and gave his career a major late-period commercial boost.

The song was composed by Bert Kaempfert, with English lyrics by Charles Singleton and Eddie Snyder. Kaempfert had originally used the melody under the title Beddy Bye in the score for the 1966 film A Man Could Get Killed. Sinatra recorded it on April 11, 1966, during sessions produced by Jimmy Bowen for Reprise Records.

Strangers in the Night reached number one on both the Billboard Hot 100 and the Easy Listening chart, where it stayed at the top for seven weeks. It was also a number-one hit in the United Kingdom and several other countries. Sinatra reportedly disliked the song, despite its success. His earlier standards, including I've Got You Under My Skin, were hugely admired but had not reached number one on the Hot 100.