Taylor Swift and Walk the Moon Perform "Shut Up and Dance" in Concert

Taylor Swift delivered a very important, very popular message on stage in Boston Friday night:

Shut up and dance with me!

The singer’s “1989 World Tour” took her Gillette Stadium, where she invited Walk the Moon out on stage with her for a rendition of their mega huge smash single.

This has become a tradition for Swift, of course, who earlier in her tour welcomed such acts as Lorde, Nick Jonas and Sam Hunt.

"Thaks @WALKTHEMOONband for surprising the Boston crowd with ‘Shut Up and Dance’!!! 60,000 person dance party," Swift wrote on Instagram shortly after the concert ended.

Take a look at the fun duet above.