IPA: /ˈsɔŋləs/
KK: /sɔŋləs/
Not having or producing any songs.
The forest was songless, with only the sound of rustling leaves.
Songless → It is formed from "song" (from Old English *sang*, meaning a musical composition or vocal performance) and "-less" (meaning without). The word "songless" means without a song or lacking a musical composition.
Think of being 'without' ('-less') a 'musical composition' ('song') — that's why songless means lacking a song.