In July 2011, Leona Lewis added vocals to Avicii's track penguin. The Avicii track was originally created from a sample from Penguin Café Orchestra's Perpetuum Mobile.
There has been a lot of rumours about this song's copyright issues, on Leona's Twitter she said:
"With regards to my song, avicii was aware & agreeing publishing splits for himself and his manager When avicii sent his track out to have a song written over…
I'll pick you up when you're down
Be there when no one's around
When you're in unfamiliar places
Count on me through life's changes