To me it's always been confusing when singing the Swedish version of "Twinkle Twinkle Little Star". The second line is hur jag undrar vad du är in Swedish and how I wonder what you are in English. As a child I never knew if it was vad or var (since they are pronounced the same where I'm from unless they are emphasized) and now as an adult I have to sing the English version to know which one it is.
Usually the -d is silent in vad, and I think it depends on dialect whether you pronounce the r or not in var. I pronounce them both as va at least.
The "a" is pronounced rounded when it is a long vowel: [ɒ:]. But it isn't actually the exact same sound as long "å", which is closer to [o:], neither it is to short "å", near to [ɔ]
It is only now that I realize that Swedish sounds a bit like a flat Flemish dialect (from the province of Antwerp). To me "var" sounds as "waor" (waor zedde?) :D How I love Swedish!