In a detailed study published in 1987 of the tiger's musical and noise-making functions, Arthur W.J.G. Ord-Hume concluded that since coming to Britain, "the instrument has been ruthlessly reworked, and in doing so much of its original operating principles have been destroyed". There are two ranks of pipes in the organ (as opposed to the wailing and grunting functions), each "comprising eighteen notes, [which] are nominally of 4ft pitch and are unisons - i.e. corresponding pipes in each register make sounds of the same musical pitch. This is an unusual layout for a pipe organ although while selecting the two stops together results in more sound ... there is also detectable a slight beat between the the pipes so creating a celeste effect. ... it is considered likely that as so much work has been done ... this characteristic may be more an accident of tuning than an intentional feature". The tiger's grunt is made by a single pipe in the tiger's head and the man's wail by a single pipe emerging at his mouth and connected to separate bellows located in the man's chest, where they can be accessed by unbolting and lifting off the tiger. The grunt operates by cogs gradually raising the weighted "grunt-pipe" until it reaches a point where it slips down "to fall against its fixed lower-board or reservoir, discharging the air to form the grunting sound" Today all the sound-making functions rely on the crank-handle to power them, though Ord-Hume believes this was not originally the case.

Works on the noise-making functions included those made over several decades by the famous organ-building firm Henry Willis & Sons, and Henry Willis III, who worked on the tiger in the 1950s, contributed an account to a monograph by Mildred Archer of the V&A. Ord-Hume is generally ready to exempt Willis work from his scathing comments on other drastic restorations, which "vandalism" is assumed to be by unknown earlier organ-builders. 
There was a detailed account of the sound-making functions in "The Penny Magazine" in 1835, whose anonymous author evidently understood "things mechanical and organs in particular". From this and Ord-Hume's own investigations, he concluded that the original operation of the man's "wail" had been intermitent, with a wail only being produced after every dozen or so grunts from the tiger above, but that at some date after 1835 the mechanism had been altered to make the wail continuous, and that the bellows for the wail had been replaced with smaller and weaker ones, and the operation of the moving arm altered. 

Puzzling features of the present instrument include the placing of the handle, which when turned is likely to obstruct a player of the keyboard. Ord-Hume, using the 1835 account, concludes that originally the handle (which is a 19th century British replacement, probably of a French original) only operated the grunt and wail, while the organ was operated by pulling a string or cord to work the original bellows, now replaced. The keyboard, which is largely original, is "unique in construction", with "square ivory buttons" with round lathe-turned tops instead of conventional keys. Though the mechanical functioning of each button is "practical and convenient" they are spaced such that "it is almost impossible to stretch the hand to play an octave". The buttons are marked with small black spots, differently placed but forming no apparent pattern in relation to the notes produced and corresponding to no known system of marking keys. The two stop control knobs for the organ are located, "rather confusingly", a little below the tiger's testicles. The instrument is now rarely played, but there is a V&A video of a recent performance.

इतिहास
Derivative works
संगीत वाद्य
पार्श्वभूमी