I guess you could read about why alcohol 'feels' like pleasure. If one were to sum up what you said, you seem to have 'a problem with pleasure'. As in, something that's pleasurable, is really an issue.
The part about 'the right music' and keep on drinking really connected with me, I was the same. There's nothing meaningful about drinking, in truth.
You say you have 'a problem with life', you 'self-medicate' and you look for a short-term fix. That certainly sounds like alcoholism. Add to it that you feel like you're striving toward that weekend 'pleasure'. Since alcohol is poison and you're looking forward to it, I'd say if not yet, then you're well on your way to another 'nasty addiction'.
Quit now, while you're still ahead. Look for counselling, maybe. Or read around here on SR. Booze is a bad place to escape to, mate - it never actually solves any 'problems with life' either. Think short-term vs long-term. You have already overcome abusing other substances - why not kick booze as well?
Good luck