viola fora de moda

[Robertino]

Help me please! I understand every word, but the main idea escapes me. What's wrong with the blind man? Fora De Moda = "out of tune" or "out of fashion"?

http://www.youtube.com/watch?v=H0rUMLnYr38

Moda de viola
De um cego infeliz
Podre na raiz, ah, ah
Vivo sem futuro
Num lugar escuro
E o diabo diz, ah, ah
Disso eu me encarrego
Moda de viola
Não dá luz a cego, ah, ah

[Robertino]

Here is my awkward translation:
"Tuning of the lute of a blind man is bad:
"I live with no future(says the lute?) at a gloomy place"
And the devil says:
"Aha, i must always keep the lute out of tune.
So that the blind man couldn't have seen the light"
Any corrections? )))

[gbasfora]

Very difficult translation. It's not easy to understant the meaninig hidden by the verses " E o diabo diz, ah, ah
Disso eu me encarrego". Anyway here is my attempt :

Out of fashion viol

Song played on a viol
By an unfortunate blind man
A decaying man since the birth

I live without hope
surrounded by darkness
The devil gloats over : Ah ah
And says : I am the responsible (for his misfortune)
Song played on a viol
Can not make the blind see