This is a relation that surely has its strong foundation on mutual respect, admiration and trust and not just one that revolves around pure commercial lines.
Well, that's the only way of giving an explanation out of a wild guess.
From the year 1988 to the present time it has remained as strong and the two Bollywood Bigwigs are to continue this alliance in the future too.
The success of the melodious and catchy songs in the success of Aamir Khan's debut film 'Qayamat Se Qayamat Tak' in 1988 started the bond.
The super hit songs came out through the label of the music company T-Series.
'Taare Zameen Par' came out fresh just like a new born flower both in the theme and content as well as the soft soothing music.
The hugely popular sound tracks of this film were also launched under the label of T-Series.
The relationship of Aamir and T-Series completes a perfect circle as the music of the perfectionist's third home production and his nephew's debut film 'Jaane Tu Ya Jaane Na' has also have been released by the T-Series.
Now every other fan of Aamir is waiting for the much awaited film 'Ghajini' of which the music is again brought to the film lovers by T-series.
Any music company will try to bag a film of the Aamir Khan, but till now T-Series has been the most successful one in getting the music rights of most of the blockbusters of the actor.
Whether the choice of T-Series is pre- planned due to some superstition which is very much prevalent in Bollywood or a strange kind of belief or is it due to some reasons yet unknown to the outside world can be answered only by Bhushan Kumar or by the superstar himself.