"Sigur Ros" ( ) ?

You don't. Most people just call is "Parentheses" or something. 

Some say Parenthesis, Brackets, Untitled, or just Sigur Ros.

I usually say "( )"
It takes a while to pronounce it correctly but once you do, it's great.

Drakk wrote: Really? I'm always torn on which inflection to use.   Is it "( )" or "( )" ?

"( )"

It depends where you come from. Apparently the authentic Hopelandic pronunciation places equal stress on both brackets: ( ). However, in the UK most RP speakers and the majority of southerners place the stress on the second bracket: ( ), whereas northeners tend to stress the first bracket: ( ). As you can probably imagine, there were some hilarious misunderstandings when the album was first released !

Back when I used to play it on the radio, when announcing it, you just make a parentheses gesture with your hands toward the microphone.  The audience can hear it, I'm pretty sure. 

If you're my high school math teacher, you pronounce it "premf-sees".

darqdean wrote: Syzygy wrote: It depends where you come from. Apparently the authentic Hopelandic pronunciation places equal stress on both brackets: ( ). However, in the UK most RP speakers and the majority of southerners place the stress on the second bracket: ( ), whereas northeners tend to stress the first bracket: ( ). As you can probably imagine, there were some hilarious misunderstandings when the album was first released ! Then there were those who place a rising intonation on the ), turning the whole thing into a question?   Incidentally, according to Sigur Rós you can call the album anything you like...