Who sings that song goes BaBa this is the sound in sumerland i think how it lol?

The song you are referring to is called "Samba de Janeiro", and it is sung by Bellini. Here are the lyrics of the part you mentioned:

"Ba ba-ba, ba ba-ba, ba ba-ba

Ba ba, ba ba-ba, ba ba-ba

Ba ba-ba, ba ba-ba, ba ba-ba

Ba ba, ba ba-ba, ba ba-ba

Ba ba ba-ba-ba, ba ba ba-ba-ba

Ba ba ba-ba-ba, ba ba ba-ba-ba

Ba ba ba-ba-ba, ba ba ba-ba-ba

Samba de Janeiro"