In Chemistry, amalgamation is the blending of two elements, and usually an Amalgam is a metallic Alloy with the element mercury, often used in tooth fillings. (See also: Metallurgy.) The use of amalgum is subject to some Controversy, due to suspicions that poisonous mercury or mercury vapor could leak into the Mouth.
In Music, amalgamation is the synthesis of sound events into an inter-parametric unit where parameters act together.