I only listen though since I don't know how and where I can buy it...;__;
For me the best is Pub and Go from England xP, I love the way when the seiyuu said bakabakabakabaka XDDD

I've heard all of them. My favourite would probably be Absolutely Invincible British Gentleman, Ore wa Doitsu sei, WDC, Hello China, My Heart Has a Light or Mein Gott. ^^' Not sure which one yet.

I think Lithuania and Poland need character songs!! So do Austria, Chibitalia and HRE! I'm done ranting now. XD

I need to buy these things sooonnnn

Out of the eight CD's, China's is my favourite...although I'm kind of biased considering he's my favourite character ^ ^;;

I've listened to all but Japan's, and I loveee Pub and Go! as well as Winter.

where can i find these?

Does anyone know how many songs exactly there are??
My favorite is either pub and go, or the tomato song! (just look at my screename)

I just downloaded them.
Exept for Germany's.
His voice scares me.

I suppose the songs are at around 50 more or less :)There's a list of the songs in the Hetalia Wiki last I've seen it. I'm still not done listening to all of them though :(
My faves would be England's, China's or Japan's like Pub and Go, Hello China, Aiyaa Four Thousand Years, and Excuse Me, I am Sorry :D I just love their seiyuu-s!

Let's see:
2 songs from Italy (N.&S.): The Delicious Tomato Song and Let's Boil Hot Water
2 songs from Germany: I am Made in Germany and Einsamkeit
2 songs from Japan: Excuse me, I am sorry and Country Where the Sun Rises, Zipangu
2 songs from America: Hamburger Street and WDC World Dancing
2 songs from England: Pub and Go and Absolutely Invincible British Gentleman
2 songs from France: Embrace the Tres Bien Moi and Paris is Indeed Splendid
2 songs from Russia: My Heart is a Light and Winter
2 songs from China: Nihao China and Aiyaa Four Thousand Years
2 songs from Prussia: Mein Gott and My Song Written by Me for Me
1 song by Rome and Chibitalia: Ren Ren Renaissance
1 song from Iceland: With Love From Iceland
1 song from Spain: Le Pasion no se Ditiene

All in all it equals into 21 character songs. . . Am I missing anyone?

Oh yeah, my favourite would be. . . EVERYONE. I like ALL character songs and I like them all equally.

^By the way, those extra songs you mentioned are probably the Maru Kaite Chikyuu and Hata Futte versions of the characters.

Chigi! I forgot Ukraine and Belarus' song: Carrot and Stick(s) (And yes, it is the one Prussia mentions in Paint It White. . .) and that makes 22 Character songs!

^. . . Wow. That's one long list. . .

I haven't bought any of them. But I do listen to them online. Here are my favourites:

-Carrot and Stick (Ukraine and Belarus feat. Prussia)
-Mein Gott! (Prussia)
-With Love From Iceland (Iceland feat. Mr. Puffin)
-Einsamkeit (Germany)
-Absolutely Invincible British Gentleman (England)
-Pub and Go! (England)
-The Delicious Tomato Song (S. Italy)
-Excuse Me, I Am Sorry (Japan)
-Winter (Russia)
-Ni Hao, China! (China)
-Aiyaa 4000 years (China)
-Let's Boil Hot Water! (N. Italy)
-Hamburger Street (America)

This would be in the actual order, more or less, of my preference.

My fave is Hamburger street!!

Hahahahahaaaaa!!!!!!!!!!!
More Character songs to be added to the list!
One is by Seychelles: Vacation Island (haven't heard that yet! And name is probably incorrect.)
Second is Hong Kong: Maji Kandou (don't know English meaning.)
Third is Taiwan: Poi Poi Poi! *insert musical note here* (sooo cute!)
And Lastly is Canada's duet with Kumajiro which will be released this May.

*Squealing due to extreme excitement*

Which makes 26! (Including Canada's.)
Yipeee!!!!!!!!