How Long Has This Been Going on?

How Long Has This Been Going on? a song by Biseo Sanjust Quartet on Beatsfy

A Foggy Day by Biseo Sanjust Quartet ,
Old Folks by Biseo Sanjust Quartet ,
St James Infirmary by Biseo Sanjust Quartet ,
Cheek to Cheek by Biseo Sanjust Quartet ,
My Foolish Heart by Biseo Sanjust Quartet ,
The Days of Wine and Roses by Biseo Sanjust Quartet ,
How Long Has This Been Going on? by Biseo Sanjust Quartet ,
Fine and Dandy by Biseo Sanjust Quartet ,
Stella by Starlight by Biseo Sanjust Quartet ,
If I Should Lose You by Biseo Sanjust Quartet ,