Dobie Gray, a versatile singer and songwriter who had a handful of hits in various pop genres but who was probably best known for his enduring 1973 soul anthem, “Drift Away,” a wistful paean to all songwriters and their songs, died on Tuesday in Nashville. He was believed to be 71.

Dobie Gray in 1973.

The cause was complications of cancer surgery, said his friend and fellow songwriter George Reneau.

Mr. Gray, who sang and wrote songs in a range of styles including rhythm-and-blues, country, disco and gospel, had his first Top 20 hit in 1965 with “The ‘In’ Crowd,” an upbeat hymn to hipness that captured the social restlessness of the time. Written by Billy Page and based on an idea suggested by Mr. Gray, the song struck a special chord in the music industry and was performed by many others, including the Ramsey Lewis Trio (whose 1965 instrumental version was an even bigger hit than Mr. Gray’s), Petula Clark, the Mamas and the Papas, Lawrence Welk and the Chipmunks.

Management problems left Mr. Gray without much to show for his early success, he told Billboard in 1974. He said he received no royalties for “The ‘In’ Crowd.”...

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