Down The Pit

Creeping through the basement of the run-down old house on the edge of town, you come across a gaping chasm in the floor. By the light of your flickering torch, you see, at the bottom, a pile of keys. You knew the rumours were true!
Leaning over, you try to grab one. They're just out of reach! You move to the lip of the pit, stretching as far as you can - and feel your balance start to go!
As you start to fall, the realisation strikes you that this pit is far deeper than you thought.
You hit the cold bottom, your torch has gone out. Will you be able to climb out? Will you be able to grab any loot? Are you skilled enough to find any secret treasures? Most importantly, what tunes will you be listening to as you try to make good your escape?
Start your ascent.