torch song

US /ˈtɔːrtʃ sɔːŋ/
UK /ˈtɔːrtʃ sɔːŋ/
"torch song" picture
1.

a sentimental song, typically one about unrequited love.

:
She sang a classic torch song, pouring her heart out about lost love.
Many jazz vocalists are known for their powerful torch song performances.