「春じゃもの」の「じゃもの」はどういう意味？


What does the じゃもの in 春じゃもの mean? The phrase is a koto song title, so I can't
give much context. I think my teacher said it meant something like "clearly",
or "the essence of". But I can't remember, and I was wondering if the じゃ was
では and if the mono was 物.




I think it is

> 春だもの。  
>  春だもん。  
>  (≒春だから。)

said in an archaic way or in [役割語-
老人語](http://ja.wikipedia.org/wiki/%E5%BD%B9%E5%89%B2%E8%AA%9E#.E8.80.81.E4.BA.BA.E8.AA.9E)
(or maybe in a regional dialect).

