One of the great composers of the 18th century W.A.Mozart wrote in 1791 a beautiful unique Aria "Per questa bella mano" with a virtuoso solo double bass part. The double bass part is the reason why the Aria is seldom performed or recorded. G.Bottesini is an outstanding figure in double bass literature. What Nicolo Paganini means for violin literature, Bottesini means the same for double bass literature. Bottesini was called the Paganini of the double bass. Like G.Verdi, his lifelong friend, he composed and conducted. In 1871 he directed the first performance of Verdi's "Aida" in Cairo. K.D.von Dittersdorf and J.M.Sperger are contemporaries of Mozart and wrote delightful music for viola and double bass. The Prague Chamber Orchestra Without A Conductor originated in 1951 from members of the Prague Radio Symphony who decided to devote themselves to a repertoire requiring not a large orchestral ensemble but precise coordination, purity of sound and expressive spontaneity. The Orchestra has gained international renown during it's years of activity. It holds such awards as: Charles Cross Grand Prix Academie (France) and Supraphon Golden Disc 1987 (Czech Republic - former Czechoslovakia. Music Director and Sound Engineer is Václav Zamazal who holds prestigious awards such as: USA Recording of the Year (1977 USA), Grammy Price (1994 Czech Republic, Charles Cross Grand Prix Academie (France), Wiener Flötenuhr Price (Austria), Edison Price (Holland).