only 1 use
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- In his dream he saw the turntable whirling around its spindle, so fast it became invisible, inaudible, not simply rotating wildly in place, but moving in a strange lateral undulation so that the arm beneath which it turned began to oscillate supplely, as if it were breathing—very useful, one might suppose, for the vibrato and portamento of strings and human voices.7.7 - Fullness of Harmony (30% in)
There are no more uses of "portamento" in The Magic Mountain.
Typical Usage (best examples)