song title

someone please help me i love the song that is in season 10, episode 11. but can’t identify the artist

lyrics that i could catch: something inside me it's longing for more, left behind me the things i know, cause once in a lifetime

i have to write a bunch more characters so this can be posted. i have to write a bunch more characters so this can be posted. i have to write a bunch more characters so this can be posted.

HELP ME