Studied at Tartu Art school "Pallas" from 1924 – 29 and 1931 -33 years in the Studio of ADO vabbe. From 1935 to 1937 in the same place taught. In years of teaching Mugasto were impacted by the Estonian constructivists, and E. Wiiralt under whose leadership worked for a short time. The artist died only four years after the completion of their education, but many have time. Took a leading role in the Estonian art in the development of woodcuts.
Exhibitions: Cologne, Copenhagen, 1930., Koshitsa of 1933, Moscow 1935, Warsaw (prize and diploma) 1936. Chicago 1936, 1937, Riga, Kaunas, 1937., Rome, Budapest And Antwerp.