Music offered Philip Sidney and his milieu a unique form of communio, both in the sense of remote communication between souls and in the sense of social “community.” In The Defence of Poesy, in the eclogues of The Countess of Pembroke’s Arcadia, and in the sonnet sequence Astrophil and Stella, Sidney envisions an open-ended, experimental mediascape that neither begins nor ends with writing. This interest in media interactivity resurfaces, in turn, in the compositions of William Byrd, Thomas Campion, John Dowland, and others who translated Sidney’s poetry and his musical legacy into the medium of print. After Sidney’s death, print became a means not to oppose or transcend performance but to activate new sites of music making in amateur and household contexts, opening up new forms of collaboration among poets, performers, and composers.