16 years ago, when I was 19, I went to an Irish pub with some friends after band practice. After some time and a few beers we unpacked our guitars and started playing acoustic. We sang and stomped on the wooden floor, attracting the attention of the other guests, who began to clap after the songs and startet to request songs from us. The bartender asked us to finish at 1 o'clock, but some guests still called their friends and so the place became more and more crowded. We played until 6 o'clock in the morning. 
After that night I decided to start playing live music in bars & pubs.