Jimmy Ellis, the soulful lead singer of the Trammps, whose 1970s hit “Disco Inferno” was immortalized in the film “Saturday Night Fever,” died on Thursday in Rock Hill, S.C. He was 74.
The cause was complications of Alzheimer’s disease, Erika Stinson, his daughter, said.
Mr. Ellis’s melodious voice overlaid the funky guitar riffs and driving bass and drums of the Trammps’s dance music. He sang lead on most of the group’s songs, backed by the bass singer Earl Young, and later harmonized with Robert Upchurch, who joined the band in the mid-1970s.