Luca Vanneschi's wrote for Eb clarinet and Bass clarinet. Third stream for Bass clarinet contained numerous glisses, which
Stuart said are not really possible on the instrument, as it is entirely keyed rather than fingered like the Bb clarinet. He did his best to
produce a gliss-like effect where possible, but there was often little that could be done. Stuart said this mistake was
made by even highly experienced composers frustratingly often.