Singer: Raul Malo And another version by Feist ( Ron Sexsmith Cover ) Secret heart What are you made of What are you so afraid of Could it be Three simple words Or the fear of being overheard What's wrong Let her in on your secret heart Secret Heart Why so mysterious Why so sacred Why so serious Maybe you're Just acting tough Maybe you're just not bad enough What's wrong Let her in on your secret heart This very secret That you're trying to conceal Is the very same one You're dying to reveal Go tell her how you feel Secret heart come out and share it This loneliness, few can bear it Could it have something to do with Admitting that you just can't go through it alone Let her in on your secret heart This very secret That you're trying to conceal Is the very same one That you're dying to reveal Go tell her how you feel This very secret heart Go out and share it This very secret heart