Hey there!
So you're looking to make the switch to your account from being Australia-based to Singapore-based? Well, your account location is based off of the payment method location - Your account profile will show up as Singaporean if you use a Singapore-based Credit Card or PayPal account or Malaysian if you use a Malaysia-based Credit Card or PayPal account.
Now, I do not know for sure about what happens when it comes to switching your payment methods in the middle of a subscription cycle. That has never happened to me before and I don't think I will change my Premium subscription right now for the sake of not having any bad happenings for myself (as I got into a bit of a fuss with a restaurant for messing up a Credit Card transaction that caused double charges) just to check on this one. The safest bet, to be honest, is to wait for the time prior to the subscription's end date (a day before, probably,) and change the payment method at that time.
Music availability depends on the content owner's geographic availability. Therefore, what's available in Australia may not be available in Singapore. For example, some of Spain's local hits might sound great... but they may not be allowed to be heard in the United States because the Spanish record label doesn't want to release it to them to listen for the same amount of royalty fees that the Spanish have to pay. More or less, the local Australian bands or musicians may not have their music available in Singapore and certain other artists may lock down on their availability in Singapore. You may want to check up on that once you make the transition - nothing is guaranteed. If, in the unfortunate case, the tracks you want to listen to are unavailable in Singapore, consider buying it off somewhere!
Keep on [party] rocking!
I.T. Professional
Virtualisation Solutions (VCA-DCV - VMware)
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