"Helicopter", by The Chills.
Not so much a song as a hint of an idea for a song. But, as with anything by Martin Phillipps, it bears the indelible mark of his singular way with melody.
This was released about 13 years ago as part of the three-disc "Secret Box" collection of Chills rarities, which existed thanks to the (continuing) good works of the people behind the Soft Bomb website. The set is long unavailable, and the longer we wait for further Chills recordings, the less likely it would appear that there ever will be any. (Insert sad face here.)
Anyway you can listen to this curious fragment here (right click etc; you know the drill by now), and speculate as to what might have been (and what, fate willing, may still be).