The mridangam (Tamil: மிருதங்கம்) is a percussion instrument from India, especially South India. It is the primary rhythmic accompaniment in a Carnatic music ensemble .
In ancient Hindu sculpture, painting, and mythology, the mridangam is often depicted as the instrument of choice for a number of deities including Ganesha (the remover of obstacles) and Nandi, who is the vehicle and companion of Lord Shiva. Nandi is said to have played the mridangam during Shiva’s arcane Tandava dance, causing a divine rhythm to resound across the heavens. The miruthangam is thus also known as “Deva Vaadyam,” or “Instrument of the Gods.”
The word “mridangam” is derived from the two Sanskrit words “Mrid” (clay or earth) and “Ang,” (body). Early mridangams were indeed made of hardened clay. Over the years, the mridangam evolved to be made of different kinds of wood due to its increased durability, and today, its body is constructed from wood of the jackfruit tree. It is widely believed that the tabla, the mridangam’s North Indian musical counterpart, was first constructed by splitting a mridangam in half. With the development of the mridangam came the evolution of the tala (rhythmic) system. The system of talas (or taalams) in South Indian Carnatic music may be the most complex percussive rhythm system of any form of classical music.
The mridangam is a double-sided drum whose body is usually made using a hollowed piece of jackfruit wood about an inch thick. The two mouths or apertures of the drum are covered with a goat skin leather and laced to each other with leather straps around the circumference of drum. These straps are put into a state of high tension to stretch out the circular membranes on either side of the hull, allowing them to resonate when struck. These two membranes are dissimilar in width to allow for the production of both bass and treble sounds from the same drum.
The bass aperture is known as the “thoppi” or “eda bhaaga” and the smaller aperture is known as the “valanthalai” or “bala bhaaga”. The smaller membrane, when struck, produces higher pitched sounds with a metallic timbre. The wider aperture produces lower pitched sounds. The goat skin covering the smaller aperture is anointed in the center with a black disk made of rice flour, ferric oxide powder and starch. This black paste is known as the “sAtham” or “karnai” and gives the mridangam its distinct metallic timbre. The combination of two inhomogeneous circular membranes allows for the production of unique and distinct harmonics. Pioneering work on the mathematics of these harmonics was done by Nobel Prize winning physicist C. V. Raman
Immediately prior to use in a performance, the leather covering the wider aperture is made moist and a spot of paste made from rice flour and water is applied to the center, which lowers the pitch of the left membrane and gives it a very powerful resonating bass sound. The artist tunes the instrument by varying the tension in the leather straps spanning the hull of the instrument. This is achieved by placing the mridangam upright with its larger side facing down, and then striking the tension-bearing straps located along of circumference of the right membrane with a heavy object (such as a stone). A wooden peg is sometimes placed between the stone and the mridangam during the tuning procedure to ensure that the force is exerted at precisely the point where it is needed. Striking the periphery of the right membrane in the direction toward the hull raises the pitch, while striking the periphery from the opposite side (moving away from the hull) lowers the pitch. The pitch must be uniform and balanced at all points along the circumference of the valanthalai for the sound to resonate perfectly. The pitch can be balanced with the aid of a pitch pipe or a tambura. The larger membrane can also be tuned in a similar manner, though it is not done as frequently. Note that since the leather straps are interwoven between both the smaller and larger aperture, adjusting the tension on one side often can affect the tension on the other.
A morsing (also mourching or morching) is a percussion instrument, mainly used in the Carnatic music of South India. It can be categorized under lamellophones, which is in the category of plucked idiophones. It consists of a metal ring in the shape of a horseshoe with two parallel forks which form the frame, and a metal tongue in the middle, between the forks, fixed to the ring at one end and free to vibrate at the other. The metal tongue is bent at the free end in a plane perpendicular to the circular ring so that it can be struck and is made to vibrate. This bent part is called the trigger.
The morsing is an Indian version of the Jew’s harp. Its origin in India is not very clear though many myths and stories prevail. In India it is found mainly in South India, Rajasthan and also in some parts of Assam. In South India, where it is called morsing, mourching or morching, it features in Carnatic concerts and percussion ensembles. In Rajasthan it is called a morchang and is used as percussion instrument in folk music.
The morsing is placed between the teeth and held firmly in the hand and is struck using the other hand to produce sound. Movement of the player’s tongue, variations of the throat and blowing and sucking of air through the instrument produces different sounds or overtones.
The morsing is firmly held in the hand, the frame or the ring between the palm and the fingers usually in the left hand. Care should be taken to see that the middle part or the metal tongue is not being touched when held idle. Then the two parallel forks are gently pressed against the front upper teeth. The trigger is plucked with the tip of the index finger. Sound is produced due to the vibration of the metal tongue of the morsing in the mouth and the throat cavity. Movement of the player’s tongue with constant plucking can produce very fast patterns of sound. By constricting the space in the mouth and throat many variations of sound can be produced.
The basic pitch of the instrument can be varied very little. Significantly, the pitch of the instrument can only be reduced and not increased. To reduce the pitch a little, bee-wax can be applied on the plucking end. To increase the pitch, it can be filed, although this may damage the instrument.
The kanjira or ganjira, a South Indian frame drum, is an instrument of the tambourine family. It is used primarily in concerts of Carnatic music (South Indian classical music) as a supporting instrument for the mridangam. The kanjira is a comparatively recent innovation (having been used for fewer than 100 years), and was added to classical concerts during the 1930s.
Similar to the Western tambourine, it consists of a circular frame made of the wood of the jackfruit tree, between 7 and 9 inches in diameter and 2 to 4 inches in depth. It is covered on one side with a drumhead made of monitor lizard skin (specifically the Bengal monitor, Varanus bengalensis, now an endangered species in India), while the other side is left open. The frame has a single slit which contain three to four small metal discs—often old coins—that jingle when the kanjira is played.
The kanjira is probably the most difficult Indian drum to play for unexplained reasons. It is normally played with the palm and fingers of the right hand, while the left hand supports the drum. The fingertips of the left hand can be used to bend the pitch by applying pressure near the outer rim. It is not tuned to any particular pitch, unlike the mridangam or the ghatam.
Normally, without tuning, it has a very high pitched sound. To get a good bass sound, the performer reduces the tension of the drumhead by sprinkling water on the inside of the instrument. This process may have to be repeated during a concert to maintain a good sound. However, if the instrument is too moist, it will have a dead tone, requiring 5-10 minutes to dry. Tone is also affected by external temperature and moisture conditions. Performers typically carry a couple of kanjiras so that they can keep at least one in perfectly tuned condition at any given time.
The ghatam is a percussion instrument, used in the Carnatic music of South India. It is an earthenware pot; the artist uses the fingers, thumbs, palms, and heels of the hands to strike the outer surface of the ghatam. An airy low-pitch bass sound, called gumki, is created by hitting the mouth of the pot with an open hand. The artist sometimes presses the mouth of the pot against their bare belly, which deepens the tone of the bass stroke, and is another way to produce the “gumki” sound. Different tones can be produced by hitting different areas of the pot with different parts of the hands. The ghatam usually accompanies a mridangam.
Although the ghatam is the same shape as an ordinary Indian domestic clay pot, it is made specifically to be played as an instrument, the tone of the pot must be good and the walls should be of even thickness all around to produce an even tone. In fact, there are two types of ghatams; Madras and Manamadurai. The Madras ghatam is a light pot which requires less force to play, thus is suited for extended fast patterns. The Manamadurai ghatam is a heavy, thick pot with tiny shards of brass mixed into the clay. This type of ghatam is harder to play but produces a sharp metallic ringing sound which is favored by some players.