mixer

1 :  one that mixes: such asa (1) :  one whose work is mixing the ingredients of a product (2) :  one who balances and controls the dialogue, music, and sound effects to be recorded for or with a motion picture or televisionb :  a container, device, or machine for mixingc :  a game, stunt, or dance used at a get-together to give members of the group an opportunity to meet one another in a friendly and informal atmosphere; also :  the get-together itself

2 :  one that mixes with others: such asa :  a person considered in regard to casual sociability was shy and a poor mixerb :  a nonalcoholic beverage (such as ginger ale) used in a mixed drink