The song is by Ashes Remain.
I don't know why it's a female singer in the song but it's good.

Sabine's pov
I was crying as Ezra wasn't here but I remembered a song he sing me a while ago

Sabine looked for her holopad as it was a recording of Ezra singing the song for her as Sabine found the holopad as she looked for the video of Ezra, ah there you are said sabine as she played the video

(Here's the song)

[There should be a GIF or video here. Update the app now to see it.]

Sabine watched the video of Ezra as she smiled as she loved how he sings as he had a good voice.

Sabine's pov
When I was watching the video of Ezra singing to me ami thought of something, I did to sing him a song to him said sabine to herself as the video ended.

Too be continued.............
And remember the force will always be with you.
Mammal out!