Answer:
key
note do re me fa so la ti do fr mi re do
Polyphony began and musical rules changed.
The term that best completes the blank is TOP CAT. "Top Cat, the indisputable leader of the gang." This is actually from a song lyrics entitled "Top Cat" which is by <span><span><span>Joseph Barbera & </span><span>William Hanna. This is a theme song of the cartoon "Top Cat". Hope this answers your question. </span></span></span>