The bulk of Vieuxtemps' compositions were for his own instrument, including seven concertos and a variety of short salon pieces, though towards the end of his life, when he had to give up the violin, he often turned to other instruments, writing two cello concertos, a viola sonata and three string quartets among other things. It is because of his seven violin concertos, however, that Vieuxtemps is generally known to audiences and musicians around the world. Through his own concertos and his advocacy of the concertos of Beethoven (he also played Beethoven's sonatas and string quartets) and Mendelssohn, he added a more classical dimension to the violin repertoire which had tended towards technically brilliant but often shallow variations and fantasies on popular operatic themes. Vieuxtemps never indulged in sheer virtuosity for its own sake, like some of his predecessors. Eugène Ysaÿe quotes him as saying "Not runs for the sake of runs - sing, sing!"