getting heard ..... by the right person at the right time ....and promoted........was and still is seemingly the answer---
this (though not rock music) started on sound cloud
The track was written, mixed, and produced by Eilish's brother,
Finneas O'Connell. Finneas had written and produced "Ocean Eyes" originally for his band the Slightly's, before realizing it would be a better fit for Eilish's vocals.
[1] He gave it to Eilish when her dance teacher at the Revolution Dance Center (Honolulu Avenue, Los Angeles) Fred Diaz asked them to write a song for choreography.
[2][3] The track was entirely made using
Logic stock sounds.
[4] The vocals were recorded with an
Audio-Technica AT2020 microphone.
[4] When asked about how the song came about in an early 2017 interview with
Teen Vogue Eilish said that "[Finneas] came to me with 'Ocean Eyes,' which he had originally written for his band. He told me he thought it would sound really good in my voice. He taught me the song and we sang it together along to his guitar and I loved it. It was stuck in [my] head for weeks." Finneas would later become Eilish's manager.
[5]
Eilish and her brother uploaded the track to
SoundCloud on November 18, 2015 so Diaz could have access to it.
[6] The song went viral overnight.
[7] When Eilish got a growth plate injury, it put an end to her dancing career and she turned her focus toward a recording career.
[8] After Eilish signed to Darkroom and
Interscope Records, "Ocean Eyes" was re-released for
digital download and
streaming on November 18, 2016 as the lead single on Eilish's debut EP
Don't Smile at Me and the album
Everything, Everything (Original Motion Picture Soundtrack).
[9] Mastering was handled by studio personnel John Greenham.
[10] An
EP featuring remixes by Astronomyy,
Blackbear,
Goldhouse and
Cautious Clay was released On January 14, 2017.
[11]
and launched this ....career.
en.wikipedia.org
The under ground clubs...... and back alley bars where the ROCK GODS were discovered --signed to labels and "launched" have become........ sound cloud and youtube and spotify still the same concept it appears -----different venue