Today, these terms describe the main song and a secondary song, even for digital music. Singles were released on these from the 1950s Não havia paradas de sucesso até os anos 30
Avery Leigh OnlyFans: The Untold Secrets Revealed - Truth or Fiction
That is, both sides are prospective hit songs and neither side will be promoted over the other.
They used to mean the two different side of 7 inch vinyl records
