What in your opinion makes a piece of music an outstanding track ?

[Tiggi]

For me to sit up & take note, all it has to do is make some sort of positive connection.

This can be something unique or original, and as Ed says, Vocals, hooks, or Lyrics, plus I'd add Rhythms. I get drawn to exotic rhythms very easily, but I'm not talking about odd time signatures.

My appreciation on early listens can be affected by my mood, so I'll need to be in the right mood to feel it good & proper...