三月裡的小雨 - Chinese song
In a Chinese karaoke song I heard this:

三月裡的小雨
淅瀝瀝瀝瀝瀝
淅瀝瀝瀝下個不停。
山谷裡的小溪
嘩啦啦啦啦啦
嘩啦啦啦流不停。
小雨為誰飌小溪為誰流。。。

I’d like to know if this 瀝 is an onomatopoeia for the raindrops. That’s what I infer from the first verse and the radical water (水) in 淅 and 瀝. Could you explain me these verses?
The 啦 and 嘩 are exclamative particles, aren’t they? Are there any other uses besides the lalala use in songs? By the way, this is traditional Chinese, couldn't find the simplified version of 飌.
谢谢!

Question

三月裡的小雨 - Chinese song 
In a Chinese karaoke song I heard this:

三月裡的小雨
淅瀝瀝瀝瀝瀝
淅瀝瀝瀝下個不停。
山谷裡的小溪 
嘩啦啦啦啦啦 
嘩啦啦啦流不停。 
小雨為誰飌小溪為誰流。。。

I’d like to know if this 瀝 is an onomatopoeia for the raindrops. That’s what I infer from the first verse and the radical water (水) in 淅 and 瀝. Could you explain me these verses?
The 啦 and 嘩 are exclamative particles, aren’t they? Are there any other uses besides the lalala use in songs? By the way, this is traditional Chinese, couldn't find the simplified version of 飌.
谢谢!

Answer

Translate it and everyone will be able to read

Answer

Tt's an old song, the singer is Zhang Ming ming(张明敏）。
As below is the whole lyrics :

三月里的小雨淅沥沥沥沥沥 
淅沥沥沥下个不停 
山谷里的小溪哗啦啦啦啦啦 
哗啦啦啦流不停 
小雨为谁飘小溪为谁流 
带著满怀的凄清 

三月里的小雨淅沥沥沥沥沥 
淅沥沥沥下个不停 
山谷里的小溪哗啦啦啦啦啦 
哗啦啦啦流不停 

小雨陪伴我小溪听我诉 
可知我满怀的寂寞 
请问小溪谁带我追寻 
追寻那一颗爱我的心 

so, 飌 is 飘（piao). 淅沥沥...here is discribe the rains' sound. 哗啦啦...here is discribe the flow's sound. 

I know some children's songs using lalala. like  the lyrics 啦啦啦，啦啦啦，我是卖报的小行家。

and 这里有红花，这里有绿草，还有那会唱歌的小黄鹂。啦啦啦啦啦。啦啦啦啦啦。