Four early 90's italian songs

Anyone knows these songs (Il sole? Su su su su giù giù giù giù)? I have them on tape and I have just uploaded them on zippyshare.
Thank you.

http://www63.zippyshare.com/v/aA5tZTog/file.html
http://www63.zippyshare.com/v/DoLwQbA8/file.html

To revive this post, I add another one (Sotto il cielo di Berlino?)
http://www39.zippyshare.com/v/O59CX0I4/file.html

and another one (Ora che ho te? NOT the Baglioni song)
http://www21.zippyshare.com/v/Nrm9XTQi/file.html

I have listened to all the tracks, I understand the lyrics to all of them but I don't find anything related to them. They are Italian singers of the 90's but maybe they are not famous. Google doesn't help in the search