My mother sang along to the radio, which she turned on first thing in the morning and turned off last thing at night. That was late 50s going through to the 60s. She sang along with every song that she knew - songs from the 50s, 40s, 30s, even the 20s and earlier (it was a country station that played all sorts of music, not a city station that only played the current hits) and so I learnt the songs by musical osmosis.

Cheers
JennieG who still has a soft spot for old songs......