Final answer:
The video series of in-office live music by NPR is called Tiny Desk Concerts.
Step-by-step explanation:
The video series of in-office live music by NPR is called Tiny Desk Concerts. In this series, artists from various genres perform intimate live shows at the desk of Bob Boilen, the host of All Songs Considered. The performances are usually acoustic and stripped-down versions of the artists' songs and are filmed in NPR's Washington, D.C. office.