(idiomatic) To reveal one's innermost feelings and thoughts, especially concerning one's doubts, regrets, or flaws; to tell one's personal secrets to others.
1891, Oscar Wilde, The Picture of Dorian Gray, ch. 1:
"I will not bare my soul to their shallow prying eyes. My heart shall never be put under their microscope."
Her thoughts wandered about among the various friends whose judgment might serve at this crisis to clear her own thoughts. . . . No, she could not bare her soul to the bishop.
Duritz's vocals are more anguished and torn than ever; he's as emotionally naked as a daytime talk-show guest, baring his soul and searching for empathy.