He has been involved in making music since an early age.
She has been involved in music since a young age.
She has been working as a model since the age of 16.
She wanted to become a model ever since the age of 16.
You've been looking for a mother since the age of four!
They had known each other since the age of five.
She is 50 now, a mother since the age of 43.
She has had an interest in story telling since a very young age.
I have been doing that since the age of five which is 20 years now.
He had been with the club since the age of seven.