Paul McCartney is singing his praises for Beyoncé’s version of “Blackbird.” The music legend on Thursday wrote on his Instagram page that he’s “so happy” with the Grammy-winner’s cover of the 1968 Beatles track that is included on her newly released “Act II: Cowboy Carter” album, under the slightly revised title “Blackbiird.” “I think she does a magnificent version of it and it reinforces the civil rights message that inspired me to write the song in the first place,” he wrote. He went on to “urge anyone who has not heard it yet to check it out.”