Also, like violins, cello are of different sizes (4/4, 3/4, 1/2, 1/4, 1/8) and are selected according to the growth and complexion of the musician. Cello 1st string - a (la small octave); 2nd string - D (re small octave); 3rd string - G (large octave salt); 4th string - C (to Big Oktava).