text: Hey Susan,\n\n I had bever heard of vocable before. \nThis might help:\n\n"A vocable is a word used without meaning. They are used in Blackfoot music and other American Indian music and other music such as Pygmy music and the music of the Maldives.\n\nThe Blackfoot, like other Plains Indians, use consonants h, y, w, and vowels. They avoid n, c (ts) and other consonants. i and e tend slightly to be higher pitches, a, o, and u lower ones."\n\nMore here:\nhttp://72.14.209.104/search?q=cache:euZfM8HPzlIJ:en.wikipedia.org/wiki/Blackfoot_music+indian+vocables+wikipedia&hl=en&gl=us&ct=clnk&cd=1