Finneas said the opening track on the record would give fans "a total false promise"
The singer-songwriter's third album is due to arrive in May
The letter, which has over 200 signatures from musicians, calls for protection against the "use of AI to steal professional artists' voices and likeness, violate creators' rights, and destroy the music ecosystem"
The star also thanked her dance and choir teachers – including one who “didn’t like” her
The power ballad is nominated for Best Original Song
The star was joined by brother Finneas to perform their Barbie soundtrack song, ‘What Was I Made For?’
Eilish has the chance to win her second Oscar with 'What Was I Made For?'
The crime drama series returns for a fourth season
"It takes time to get the record made and get the artwork done"
The producer and songwriter also said he "got a little rusty" while making the record at one point