Willie Nelson debuted a new, politically-driven song during his free concert in support of Texas Senate candidate Beto O’Rourke on Saturday night in Austin.

The 85-year-old star closed out his show with the new single “Vote ‘Em Out,” in which he calls on listeners to take action against candidates they dislike.

“Here’s a new song we’re going to spring on y’all tonight. Take it home with you, spread it around,” said Nelson, before starting the song with lyrics like: “If you don’t like who’s in there, vote ’em out / that’s what Election Day is all about / and the biggest gun we got / is called the ballot box / if you don’t like who’s in there / vote ’em out.”

Although the rally was in support of Sen. Ted Cruz’s opposition, Beto O’Rourke, the lyrics on their own were more a call to vote in general than an indictment of any one candidate.