Just added harmonizing. Because that's what Blob Opera is about. Changing pitches and harmonizing with other blobs. INSTRUCTIONS: Click on a blob, then a button. If you click on the "red soprano", they will sing all together. If you click on the "blue bass", he will sing alone. The green mezzo-soprano and the teal tenor are a good way of harmonizing.
@isahad99 and David Li and Google (afterwards).
