Sneaking Music:
https://www.youtube.com/watch?v=WmsAIODJU4I
You creep over to the alleyway, you lean up against a wall and peak around to the side entrance of the club. Some blue insectoid alien is hurking up his xeno guts all over the garbage cans, you could easily sneak past or dispatch him. After more investigation you also see a ladder leading up to the roof of the building, the ladder is blocked by a chain-link fence that you could easily climb over.