You are never too young or too old to be in a duo, you don't even have to be alive.
Aled Jones in a duo his younger self
Kenny Rogers in a duo with Dolly Parton
Willie Nelson in a duo with Ray Charles
Aliie Sherlock in a duo with Cuan Durkin
Teenage phenom Charlotte Summers in a duo Gonzalo Martin
Incomparable Lucy in a duo with Hercules Smith
Amira Willighagen in a duo with Patrizio Buanne
Amira in a (virtual) duo with Charlotte Jaconelli
Mario Biondi has some grey hair in his beard, so that would qualify this for the collection. But he is not even 50! Just a kid! Well,
that would qualify it too. Good job Marcella, looking better than a guy 18 years your junior.
7-year old Claire and her Dad
French-Albanian sensation. She is not even 16.
The Irish Super-busker. She is still young enough to qualify for this collection.
Allie could fill out this or any other collection