Answer:
There's not really any specific way.
Explanation:
Billie Eilish is a very distinctive singer and there is no real exact way to sound like any particular singer. If you really want to sound like someone the best thing to do is just listen to a particular sentence (or lyric) and repeat it over and over again and each time if your heading in the right track you could sound a bit like her. But there is no exact way to do this.
this is the possible answer I could think of hope it help though :))))
Here is the answer.....The Led Zepplin song 'Since I've been loving you' is a primary example of how a hard rock band used a blues rift and melody. One hears the Blues influence from the very begining with is slow guitar notes and continues throughout with Robert Plant's pleading lyrics.
Ik this is already an answer but u did not seem to find this answer so here it is. It is also a verified answer so its trust worthy.