Instruments and voices produce a variety of musical textures. As you will learn, monophony, polyphony, and homophony create distinct textures. Part of this is due to the layering (or lack of layering) of sound. Mood is defined, to some extent, by the textures and colors you present to the listener. Lastly, rhythms play a key role in determining both the texture and mood of a piece. Be sure to see section 10 for further thoughts on harmony and its role in defining mood.