I'm learning a song from the pillows
One Life, The first couple lines go:
青い芥子の花びらが 風もなく揺れてたら
Aoi keshi no hanabira ga Kaze mo naku yurete tara
If the blue poppy's petals sway without the wind...
But I don't get the grammar. is なく a the negative of ある? Is noun A が noun B もなく a way to say noun A without noun b?
Also the multiple verbs confuses me. When do you use multiple verbs and how do you organize them?