My top 3 favorite would be:

1) Goldenrod City Song (8~bit) on Pokemon Silver
2) Village Bridge Song on Pokemon White
3) Verdanturf Town Song on Pokemon Emerald
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The old school 8~bit music on games are the best game music to me.

Though, I love the way, on Pokemon Black/White, how Game Freak added certain characters in the game that adds musical instruments to the town song like in Village Bridge where you can speak to the four different characters on each corner (except the bottom~right; he is on the bridge) of the bridge.

Sadly, it been awhile since I heard of the music from the Hoenn Region, and to tell you the truth...I barely remember the town song at Verdanturf Town. Only thing I remember is that the song was soft and very calm. That's why I love it.
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How about you guys? Do you have a favorite Pokemon Town Song?

I actually don't remember that many Pokemon songs, to be honest. I can't really list out a top 3. However, if I was to choose one, it'd be the song from Lavender Town on Pokemon Red/Blue. That song was pretty creepy... and that's what made it stand out from the rest.

Tough one, here are my favorite town songs:
1. Goldenrod City (Original)
2. Vermilion City (Original)
3. Lavender Town