On the other hand, the extension of musical education and easier methods of dissemination, especially the internet, have revealed an active community of people writing canons and rounds. Perhaps a drawback is that many of the older rounds and catches so disseminated have become detached from their origins and composers, though they can be re-connected as time goes by. Nevertheless, comparison of newer materials with 17th and 18th century catches reveal the difficulty, as in epigrams, of choosing a succinct verse well matched to suitably harmonised and polyphonic music. Names quoted include the prolific Donald Sosin (USA) and Uitdenbogerd The catch technique has also migrated into other fields: Dashboard Confessional used a catch in the chorus of the song "Hold On" from the album "The Swiss Army Romance". "The Art of the Ground Round" by P. D. Q. Bach uses several catches.