Madras, June 10, 1920

Electrically operated Jalatharangam combined in union with and controlled by a harmonium.

Mr. P Subba Rao, B.A, asst. to Mr. H. B. Mathew, acting Principal, Madras Engineering College, has invented an apparatus which consists of a number of wooden hammers which strike the Jalatharangam cups filled with varying quantities of water. The hammers are actuated by electromagnetic relays which are controlled by the keys of the harmonium. The power is supplied by a storage battery 2 to 6 volts or more depending on the distance between the harmonium and Jalatharangam.

The cups are tuned to the corresponding note of the harmonium and the combination of sounds produced both by the harmonium and Jalatharangam are very harmonious and pleasing. Since only one person operates on both and the action being automatic and simultaneous there is ‘no unity of action and harmony.' Further it is easier to play on the harmonium than on Jalatharangam.

Generally only two notes can be produced with two hands but with the present instrument, 10 notes with 10 fingers are possible…

Ladies who do not wish to appear before any audience, may give a performance without being seen…

The apparatus was exhibited on Tuesday 8th… at Madhwabagh before a select audience. Among those present Messrs C.R. Sreenivasa Iyengar, V. Ramasami, P. Narayaniar, N. Rajagopalachariar, P. Somasundaram, C. P. Rangaswami Iyengar.

We understand that the patent has been applied for and will be assigned to Messrs Pappu bros., who will undertake to work with it on a commercial scale.