1)
What is the meaning of "Titzalnah"?
1.
Rashi: They will tingle. This is an expression of "Metziltayim" (Divrei ha'Yamim I, 13:8 - cymbals) and "b'Tziltzelei Seru'ah" (Tehilim 150:5).
2.
Radak: This is moving due to noise. It is used regarding the ears and lips - "l'Kol Tzalelu Sefasai" (Chabakuk 3:16).