By the 1930s, calypso singers were no longer simply chantwells for masquerade bands. Now known as "calypsonians," they had independent careers, performing in tents, movie theaters and other venues during the Carnival season. Since the turn of the century, calypso performers had given themselves unique sobriquets. Among the best-known artists of the 1930s were Lord Executor, Atilla the Hun, the Roaring Lion and the Growling Tiger. Such names expressed the calypsonians' sense of grandeur and the forcefulness with which they competed in song.