to keep using uncountable nouns as countable nouns?

[dihen]

Originally Posted by tdol

I don't think so, I would use 'a lot of piano music' or 'many pieces of piano music'.

What about "many piano music pieces"?; would they say that?
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Originally Posted by Casiopea

For example ... ?
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Here are mine,
`
EX: I'll take this (bar of) soap and those soaps.
EX: Load this (pile of) furniture and *those furniture.
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The bits in brackets (...) are optional.

I will tell you why I thought "these" and "those" were used with uncountable nouns; because I thought that many uncountable nouns were plural, and since they are already plural, they cannot be counted directly. And I might have even used a plural verb form.

[Casiopea]

Originally Posted by dihen

What about "many piano music pieces"?; would they say that?

I wouldn't.

I thought that many uncountable nouns were plural, and since they are already plural, they cannot be counted directly.

Well, water, for example, is not plural. It's a single mass. One.

EX: There is water in the sea.
EX: There are three cups of water on the table.
EX: *There are water on the table. <ungrammatical>
EX: There are waters on the table. (colloquial; cups of water)

[dihen]

Originally Posted by Casiopea

I wouldn't.

But isn't "music piece" sometimes possible when it means similar to "song". If it is, when?
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Originally Posted by Casiopea

Well, water, for example, is not plural. It's a single mass. One.
`
EX: There is water in the sea.
EX: There are three cups of water on the table.
EX: *There are water on the table. <ungrammatical>
EX: There are waters on the table. (colloquial; cups of water)

I mean not for every noun. I would certainly not think that something like "water" is plural, but for something like "furniture", I would, because it seems to resemble more than one object.

[Casiopea]

Originally Posted by dihen

But isn't "music piece" sometimes possible when it means similar to "song". If it is, when?

I've heard, piano piece.

I mean not for every noun. I would certainly not think that something like "water" is plural, but for something like "furniture", I would, because it seems to resemble more than one object.

Me, too. But take a look at its origin. It comes from a verb,

1529, "act of furnishing," from M.Fr. fourniture, from fournir "furnish." Sense of "chairs, tables, etc.; household stuff" (1573) is unique to Eng.; most other European languages derive their words for this from L. mobile "movable." http://www.etymonline.com/index.php?term=furniture[/U]]Source.

[Searching for language]

Originally Posted by dihen

Would I sound like a foreigner if I keep using uncountable nouns as countable nouns? That means adding "-s" to the "plural" using "these" and "those", and adding "a" or "an". Please tell if any native will ever make mistakes of using an uncountable noun as a countable noun. If they will never make mistakes with these words, then are there any words that they will?

some examples:

a bread, breads, some/these/those breads, these/those bread
money, these/those money
an advice, advices, some/these/those advices, these/those advice
an information, informations, some these/those informations, these/those information
a music, musics, some/these/those musics, these/those music

You won't necessarily sound like a foreigner, but as an uneducated foreigner. As for native speakers, making mistakes in the countable and non countable nouns, it is done every single day.