The term 'Small Singer' can be broken down into two crossword solutions: WREN (4 letters) and BIRD (4 letters). WREN is a small, brown-gray BIRD of the family Troglodytidae. It is known for its loud, high-pitched song. BIRD is a type of animal that is found in almost every habitat on Earth. They are characterized by their feathers, wings, and ability to fly. Both WREN and BIRD are small singers, making them perfect solutions for the term 'Small Singer'.