Justin Bieber surprised fans Sunday night [March 13] during his performance in Portland, Oregon with an acoustic version of his new single, allegedly titled “Insecurities.”

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His Purpose World Tour recently jump started in Seattle, WA last week, and the young pop star’s latest show had a serene feel to it, with his use of just a microphone and guitar. Bieber decided away from the usual choreography and topless dancing with chic models; this time, he sat low-key on a couch in his flannel shirt playing guitar and projecting his raw vocals to the audience.

The message from the song fits within the overall Purpose theme, even though it wasn’t released on the album. Among the mix of his recent content, this single continues to uplift women and promote them overcoming their insecurities.