The soloists and choir of the South Singapore Opera are a lively and highly effective group. When the Toad is biting they are required to jump on moving treadmills and sing. Soprano Arjico Wasserman and tenor Yakahoochie Portnoy have fine voices. It is a pity that they never get to use them until the final scene of the opera. Other singers repeat their words endlessly within a very restricted vocal range.