Skip to 2:00, it's Ivi singing live over the recording. That just leaves Kaliopi(?), Nina Bradic, and Anggun as the only artists that I haven't heard singing their Eurovision entry live.
http://www.eurovision.tv/page/news?id=48323&_t=italy_confirms_sanremo_song_for_nina_zilli It's official, a shortened bilingual version of Per Sempre will represent Italy.