A tuple is a fixed length ordered sequence of other Erlang terms. Each element in the tuple can be any type of term (any data type).
1> {1, 2, 3}.
{1,2,3}
2> {one, two, three}.
{one,two,three}
3> {mix, atom, 123, {<<1,2>>, [list]}}.
{mix,atom,123,{<<1,2>>,[list]}}