I should wish the () are kept intact because it is an international way of expressing the regional code where the zero is left out when calling.
In addition to that, for your info: country code for Finland is 358 (and the international call code which is in use in your country should come before that or + in mobile phones).
(Another thing i wonder: why not use e-mail...i gave the address already in the translation where also the name of the band playing was mentioned, unfortunately i have forgotten that, sorry)