Editor
Posts: 6517
Indeed, demos aren't promos, just recordings - as the word says, done for demonstrational reasons in order to gain a contract with a label etc.
But promos are/were always issued upfront of commercial/public releases to pre-advertise them and airplay only means making a song available for listening - but not to buy it,
Commercial has to be defined as the release generating turnover by sales - not in the philosphical sense of being part of a marketing strategy preparing to do so.
Promos never have/had any official release dates. The time of their being given/mailed to media has always been a question of a mixture of availability of finished recording masters, pressing plants capacities, lead-up time before magazines' deadlines and more factors.
The SHS definition of releases - absolutely rightly so - is based on the commercial release, which means the one being made available to the public to purchase the product(ion)s, which way ever.
A song/version/recording/album posted on YT (or a download portal) may just have leaked, which is a very different thing than being officially released.
Only legally entitled parties are in the position to issue any kind of official releases - which never applies to YT. Even if a label posts a clip there, it is done for pre-promotional reasons and never constitutes an official release.