listening to file while traveling in the subway

[CyrilMtl]

I have a 30 to 45mn subway ride to work everyday,
Often I try to listen a file with my noise cancelling headphone if I can get a seat.
I tried different inductions. I am often able to go into a light trance, still keeping a keeping
some attention to station name to not miss my stop.
I sometime had to walk out of the station while listening to the end of the file,
half in trance, half looking where I am going ...

I don't want to go in a very deep trance and blackout, I don't think I can because of
the noise, vibration, people around ...

Am I the only one to do that ?
Do you think it work ?
(the file isn't very 'hard', EMG train nipple orgasm with different induction)