Answer:
1. The woman visited the shop to get the record she heard on the radio
2. she suggested to Dolores to play the records so she could recognize which one is the song she must have heard on the radio
3. The woman looked depressed because when she was asked to hum the record she might have heard she became depressed in the thought of not being able to hum a national anthem
4. She remembered the source from where it came from
