I agree with you that great bands from other countries should come to Singapore, but I what I feel even more worthy are some of the local bands here who are as good as any great foreign act! :-) Have a listen to them and give them a shot. Like paramore said to the Singaporean crowd when they came in recently is to support local music because they wouldn't be famous if it weren't for their local hometown support! So think about it =)
Let me give you a few acts here
Caracal
Pleasantry
Plainsunset
The Sam Willows
Amterible
West Grand boulevard
The Observatory
The shelves
The Sets Band
Cashew Chemists (got their name from cashew road wooho)
Big timers right now MONSTER CAT
Youth wreck
53 A
Etc etc so many of them
There is also a hip hop collective group know as
The XS Collective, great budding hip hop talent scene here
So yep give these guys a listen when you're free and I am sure you will find your favorite band!
All these bands are hyper active and gigging
If you wan nice cozy Singaporean music
Check out the pigeonhole, crazy world cafe and the prince of Wales pub
Have fun!