My favourite music composer R.D. Burman sang some of his own composition in few films. The song duniyaa mein logon ko dhokhaa kabhii ho jaataa hai from movie Apna Desh is one such example. RD has his own unique style of singing, which no one can match. This movie was relased in 1972, but this song is still quite popular till today. Needless to say this song is one of my most favourite. The video on the song is below.