The music of Adele is influenced most significantly by R&B.
Adele's music is often characterized by its soulful and emotional quality, which draws heavily from the R&B genre. The use of piano and other acoustic instruments, as well as her powerful and expressive vocals, are also hallmarks of R&B music. While Adele's music may contain elements of other genres such as rock, jazz, and classical, R&B is generally considered to be the most significant influence on her sound