I had a go and ended up completely rewriting it - hope that's OK. I kept all of the good points hopefully, apologies if I over edited anything. - MB
I agree it's a lot better, but what's a "melodic note"?
I thought of one more thing: a very limited true glissando can be played on the harp. It is a pedal slide, and is sometimes used in jazz music, and accidentally other times :). If you play one of the lower strings and immediately move its corresponding pedal, you can sort of get a slide from the original tone up or down a half-step. I know it's a stretch, and doesn't need to be in the article, but it's an interesting thought. dreamyshade
How about what guitar players call a "slide"? The finger holding the string to the fretboard slides up or down the neck, shifting so rapidly to the different tones as to resemble a true glissando. Ed Poor
Quoted from the article - "On a harp, the player slide his finger up or down the strings, quickly playing the separate notes. Wind, brass and fretted stringed instrument players can effect an extremely rapid chromatic scale, giving the same effect." - MMGB