Paul David, A Dictionary of Music and Musicians (1900)
“ It is evident enough from Viotti's earlier works that his musical education, apart from violin-playing, was anything but complete—the form is clumsy, the harmonies poor; it is also true that it was by no means an unusual thing for a virtuoso to get assistance for the scoring of his concertos; but the steady progress to complete mastery of form observable in Viotti's later works, coupled with his long experience as leader and conductor, make it incredible that a man of his talent and musical instinct should not have acquired the necessary proficiency for writing an effective score. ”
