Markus Keller Violin (1/2-4/4)Step Up Violin for Advancing Students The Marcus Keller model violin is a standout choice for progressing students ready to invest in a more responsive and expressive instrument. With a tone that leans towards bright while remaining full and balanced, its ideal for players seeking clarity and presence. Finished with a hand applied varnish in a worn reddish to golden umber hue, and moderately antiqued, this violin offers both character and performance.