pirastro evah pirazzi soloist cello string set 4/4 set medium pirastro evah pirazzi soloist cello string set 4/4 set medium. evah pirazzi soloist full string set for cello. rope core steel string. brilliant sound, powerful projection, easy response, impressive harmony across the strings, smooth transition from the d to the g string. ideal for for solo playing because oif its increased power and brillance. the soloist series are characterized by more brilliance in the a & d strings, whereas the g and c have a more pronounced core sound.