Book Welt- bands and live musicians to play your next living room concert in Koblenz! SofaConcerts is the platform for living room concerts. Find bands to play your very own, private stage. Our booking platform makes the whole process painless -- find a musician a non-binding request, discuss the details, invite the guests, and then have a memorable evening. Bring the stage to your own home and book unique, professional, talented Welt- musicians with SofaConcerts.