David Ortiz and Rob Gronkowski were at the Fenway Park roof deck on Tuesday afternoon for the Dunkin Donuts Beach House BBQ.
They performed their new song "Dunkin' Paradise."
Despite having to re-start the track three times, fans still showed their support for the Patriots tight end and Red Sox slugger.
Diane Babbin from Lynn, Massachusetts said, "and Papi, even though he forgot the words, we helped him out, you know that's what fans are for."
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Big Papi and Gronk will be back at Fenway tonight where Gronk will through out the first pitch and Gronk may be his catcher.