Rick Springfield's career has hit an all-time low ... literally -- going underground Wednesday morning in NYC for an impromptu performance of "Jessie's Girl" ... on a SUBWAY PLATFORM ... and it's awesome.
It all went down during rush hour -- around 8:00 AM -- Springfield whipped out his guitar out of nowhere for a flash mini-concert, belting out three songs for busy commuters ... including the classic "Jessie's Girl."
And as a testament to how awesome it was ... a massive crowd of New Yorkers -- who don't stop for anything -- actually gathered around to sing along.
Check the clip.
Now a Subway Performer
... AND HE ROCKS!!!
10/11/2012 3:15 AM PDT BY TMZ STAFF
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