a Banger
A song so good it's like it was made just for you, and you're the only one who knows the secret code to it.
That song is a banger, I listen to it every day and it's like my personal anthem.
That beat is a banger, I know every word and I sing it like I'm in a band.
That track is a banger, I've been listening to it so much I know the lyrics by heart.