This is so weird

Ive been an stripper in an certain city for 4 months now , ive stripped in two other places before , this only just started occuring an few weeks ago to my knowellege when I came off my one month holiday , I always walk past an bank to and from work , On wednesdays I finish at 4am or 4:30am , it depends how long cashing out takes , Every wednesday theres very loud instrumental music playing from the aparement above the bank every time I come out of work , its always the same music and then it suddenly stops around 6am or 6:30am , and that one aparement always has its light on the rest dont , I started working on tuesdays , It happened then too at the same time , but every time I work thursdays , fridays and saturdays its complete slience and no music. I recorded it on my phone as im so confused. I wonder whats going on up there. I often wonder if theres an cult up there.