the.com/banger

means A track that's exceptionally good — an undeniable hit, whether it's a chart-topper or just the song that wrecks the dance floor every time.

from British slang originally for sausages (think 'bangers and mash') and for old, clattering cars that 'bang' — both senses playing on loud, percussive noise. By the late 20th century, UK club and rave culture borrowed that same explosive energy for music: a 'banger' was a track that hit the speakers like a bang, detonating the dance floor. From there it spread into everyday slang for anything brilliant — a banger of a meal, a banger of a goal.