Videos Malta - Nicole Azzopardi - Knock Knock!....Boom! Boom! (impression of first rehearsal) Powered by junioreurovision.tv. Nicole Azzopardi sings Knock Knock!....Boom! Boom! for Malta at the 2010 Junior Eurovision Song Contest. BelarusMaltaarenaMinskJuniorNicoleEurovisionSongcontestKnockBoomAzzopardi