Noteflight desperately needs the ability to produce portamento. This is an essential aspect of orchestral string technique, sliding continuously through microtones. Noteflight currently has something it calls "glissando", but this just produces a clumsy and fairly useless chromatic scale passage. When a violinist sees "gliss." on the pages, he does NOT play a chromatic scale; he slides continuously. Moreover, violinists (and violists and cellists) are constantly deliberately glissing for expressive purposes even when the written music doesn't direct them to. This is part of the natural technique and sound of these instruments.
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