They're playing our song

there is a song i sing for yoyo in the car; i first used to sing it to jaya when she was little. and she later magnanimously let me sing it to yoyo, like giving him her old teddy bear, she says.
this ustaad dog, goes into soft paroxysms when i sing it to him in the car. when not in the car he just looks surprised and not so pleased if i sing it. today i played it on youtube, the original, and i swear to god, he looked straight into my eyes, shocked - hey they're playing our song, types.
same when neighbour began to sing it softly to him some days ago to see his reaction; he ignored her but fixed me with that piercing gaze of his - so much the Westy trait - and couldnt fathom how the song was coming without me moving my lips. he didnt like it at all. the song has to be in the car bubble which includes only him and me.
must post a picture.
the song is Chhukar mere mann ko, kiya tunay kya ishara. i always thought it is a song sung to a kid - the music and words are like that; very loving nursery/lullaby sense to it. was shocked to see bachchan and neetu singh cavorting to this song, on youtube. didnt like.