《By Heart》和《By Soul》是兩首不同的歌曲，所以它們的歌詞也不同。
《By Heart》是比莉·艾利什的歌曲，其英文歌詞如下：
Verse 1:
I remember when I first felt this way
When I was just a little younger
And I didn't understand it all
But I still knew it was beautiful
Chorus:
By heart, I'm lost without you
By heart, you're the one I'm in love with
By heart, you make my life worthwhile
By heart, you make me feel complete
Verse 2:
I remember when we used to talk
About all the things we wanted to do
And I knew that I would follow you
Through anything that you would do
Chorus:
By heart, I'm lost without you
By heart, you're the one I'm in love with
By heart, you make my life worthwhile
By heart, you make me feel complete
《By Soul》是歌手Buddy Guy和Gwen Stefani演唱的歌曲，其歌詞如下：
(Verse 1)
You know we been through a lot of things together
You know I've been down and out and back up again
But it's your love that keep me hanging on
By soul, by soul, by soul
(Chorus)
And I can't imagine my life without you
My days without you, my nights without you
'Cause baby you keep me hanging on by soul, by soul, by soul
(Bridge)
Now you might not be there tomorrow night
But when the sun comes up in the morning light
I'll be here hanging on by your love, yeah
By soul, by soul, by soul.
以上就是兩首歌的歌詞，分別由不同的歌手演唱。