籁 籟 lai4
a sound; a noise; musical pipe with 3 reeds

strokes 19
radical
竹
竹
strokes after radical 13
天籁 天籟 tian1 lai4
sounds of nature

万籁俱寂 萬籟俱寂 wan4 lai4 ju4 ji4
not a sound to be heard (idiom)

万籁无声 萬籟無聲 wan4 lai4 wu2 sheng1
not a sound to be heard (idiom); dead silent