Pump organ in the context of Indian harmonium

Kattaikkuttu [கட்டைக்கூத்து] is a rural, Tamil-language based, physical and vocal form of ensemble theatre form practised in the State of Tamil Nadu in South India. It is a form of Kūttu (also spelled as Koothu), a theatre art that originated in early Tamilakam, though we are not sure what exactly the form and content of this theatre. The performers – by tradition only men – sing, act and dance and the musicians accompany them on the harmonium, the mridangam and dholak, and the mukavinai. The terms Terukkūttu [தெருக்கூத்து which translates as street theatre] and Kaṭṭaikkūttu are often used interchangeably. However, historically the two terms appear to have distinguished, at least in certain villages, between two different kinds of performance: while Terukkuttu referred to mobile performances by two actors participating in a procession for the village deity Mariamman, Kattaikkuttu denotes overnight, narrative performances at a fixed performance space acted by an ensemble of about fifteen actors and musicians.

An electric organ, also known as electronic organ, is an electronic keyboard instrument which was derived from the harmonium, pipe organ and theatre organ. Originally designed to imitate their sound, or orchestral sounds, it has since developed into several types of instruments:

• Hammond-style organs used in many styles of popular music including Pop, Rock, Country, Blues, Gospel and Jazz;

• digital church organs, which imitate pipe organs and are used primarily in churches;
• other types including combo organs, home organs, and software organs.

The melodica is a handheld free reed instrument similar in sound to a pump organ or harmonica. It features a musical keyboard on top, and is played by blowing air through a mouthpiece that fits into a hole in the side of the instrument. The keyboard usually covers two or three octaves. Melodicas are small, lightweight, and portable, and many are designed for children to play. They are popular in music education programs, especially in Asia. The modern form of the instrument was invented by Hohner in the late 1950s, though similar instruments have been known in Italy since the 19th century.