The actor had appeared in music video of the Udhas' song 'Chupke chupke' during the struggling days of his career and ever since calls the singer as his mentor.
'I look at sir (Pankaj Udhas) as a mentor because when I came into this industry as a model, the first person who graciously accepted me in his music video was sir, ' the 40-year-old said here Friday.
'With 'Chupke chupke' he is the one man who is more than responsible for my success, ' John added. Heaping praises on Udhas, John said, 'I just told him that your voice still sound so beautiful, it's amazing and it's really an honour to be here.'