"High Fidelity" by Nick Hornby.

"High Fidelity" by Nick Hornby is set in London. The main character is Rob Fleming, a man in his thirties. He doesn't really stand out in any way; he is not good-looking, but not ugly either, he runs a record-shop called Championship Vinyl and is devoted to music. He owns thousands of records. The story starts with his girlfriend Laura moving out one Monday night. He tries to convince himself that he is ok, smokes …

…in a discussion about Laura and him and walks out of the ceremony. Laura leaves soon after him and looks around for him by car, and says that she is too tires to go out with him. Laura moves back in and arranges for Rob to DJ at the Groucho Club where he used to work when he was younger and gets Marie LaSalle to do a performance in his shop to sell her records.