Marco Antônio Guimarães is a Brazillian musician and instrument builder for the group [[Uakti]]. \\ Link to his facebook page- https://www.facebook.com/profile.php?id=100010422428675\\ \\ An article in Portuguese on the instruments of [[Uakti]]- http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-75992011000100018\\ \\ A guide to building an [[Uakti]] style glass marimba-\\ https://marimblog.wordpress.com/marimba-de-vidro/projeto-de-construcao/\\