Former Texas Rep. Beto O'RourkeRobert (Beto) Francis O'RourkeDems wish civil rights icon John Lewis happy birthday: 'We are stronger because of you' Trump endorses Cornyn for reelection as O'Rourke mulls challenge The Hill's 12:30 Report: Trump escalates fight with NY Times MORE's (D) musical talents were apparent again on Wednesday after liberal news outlet Mother Jones published old videos of O'Rourke performing with a band while in full costume — a onesie and sheep mask.

In the video, O'Rourke performs the rhythm guitar part of the classic The Ramones hit "Blitzkrieg Bop" in a New Zealand accent while dressed as a sheep complete with a full mask at a 2003 concert at the now-closed Moontime Pizza in El Paso, Texas according to Mother Jones.

ADVERTISEMENT

The band's gimmick, according to one former member, was to pretend to be a group of famous artists from New Zealand that disguised their looks onstage to hide their true identities.

“Our persona was that we were a very famous band from New Zealand and we didn’t want people to know our true identities — that’s why we wore masks,” Ailbhe Cormack, the band’s former bassist, told Mother Jones. “I think people followed along with the mystery of it, but they knew who we were.”

Video of the performance posted to YouTube had just dozens of views before its discovery Wednesday, according to Mother Jones.

O'Rourke is considered a top potential contender for the 2020 Democratic Party nomination for president, and was listed in a Harvard poll last month as Democrats' third most-popular choice for the nomination behind former Vice President Joe BidenJoseph (Joe) Robinette BidenDem strategist says Clinton ‘absolutely’ has a role to play in 2020 It's Bernie Sanders vs. Elizabeth Warren in New Hampshire Harry Reid says he won’t make 2020 endorsement until after Nevada caucus MORE and Sen. Bernie SandersBernard (Bernie) SandersSanders endorses Oakland teachers strike Dem strategist says Clinton ‘absolutely’ has a role to play in 2020 News media has sought to 'delegitimize' Tulsi Gabbard, says liberal journalist MORE (I-Vt.).

The former lawmaker, who lost a highly-publicized race for Sen. Ted CruzRafael (Ted) Edward CruzInviting Kim Jong Un to Washington Trump endorses Cornyn for reelection as O'Rourke mulls challenge O’Rourke not ruling out being vice presidential candidate MORE's (R-Texas) seat in November, has not ruled out the possibility of seeking the party's presidential nomination.

“Amy and I made a decision not to rule anything out,” O’Rourke told reporters after a late November town hall in El Paso.