[ cheers ] and performed with her one last time in two soldout concerts for his 95th birthday. he s my musical companion. he s the greatest singer in the whole world. reporter: aired on cbs, it was a moving tribute to a musical legend. your golden sun will shine for me [ applause ] as he said himself, he was the original american idol. you know, grammy award-winning artist michael buble performed on two of his duet albums. he spoke to cnn about the profound impact fa impact