The ladrang is one of the gendhing structures used in Javanese

Javanese language

Javanese language is the language of the Javanese people from the central and eastern parts of the island of Java, in Indonesia. In addition, there are also some pockets of Javanese speakers in the northern coast of western Java...

 gamelan

Gamelan

A gamelan is a musical ensemble from Indonesia, typically from the islands of Bali or Java, featuring a variety of instruments such as metallophones, xylophones, drums and gongs; bamboo flutes, bowed and plucked strings. Vocalists may also be included....

 music.

The basic colotomic structure is a cycle of 32 beats (keteg) in the following order:

pTpW pTpN pTpP pTpN pTpP pTpN pTpP pTpG

where p indicates the strike of the kempyang, T the ketuk, P the kempul

Kempul

A kempul is a type of hanging gong used in Indonesian gamelan. It is often placed with the gong suwukan and gong ageng, hanging on a single rack, at the back of the gamelan, and these instruments are often played by the same player with the same mallets...

, N the kenong

Kenong

The kenong is one of the instruments used in the Indonesian gamelan. It is technically a kind of gong, but is placed on its side and is roughly as tall as it is wide. It thus is similar to the bonang, kempyang and ketuk, which are also cradled gongs. Kenongs are generally much larger than any of...

, and G the simultaneous stroke of the gong

Gong ageng

The gong ageng is . It is the largest of the bronze gongs in the Javanese and Balinese gamelan orchestra...

 and kenong. The W indicates the wela, the pause where the kempul is omitted. Thus, the gong plays once, the kenong divides that into four parts, the kempul divides each of those in two, the ketuk divides each of those in two, and the kempyang divides each of those in two. The kendhang usually plays in kendhang kalih style.

The ladrang is similar to the ketawang

Ketawang

The ketawang is one of the gendhing structures used in Javanese gamelan music.Its colotomic structure is:where p indicates the strike of the kempyang, T the ketuk, P the kempul, N the kenong, and G the simultaneous stroke of the gong and kenong. The W indicates the wela, the pause where the kempul...

 except that four (instead of two) nongan comprise a gongan. It is also similar to the lancaran

Lancaran

The lancaran is one of the gendhing structures used in Javanese gamelan music. It is the shortest of the gendhing structures that are not from the wayang repertoire. Gangsaran and bubaran are related structures that share the same colotomic structure.Groupings of four are most common at all levels...

, except it is twice as slow, and the kempyang plays in between each beat of the lancaran.

Many ladrang have two sections, an ompak

Ompak

The ompak or umpak is a section of a gamelan composition.It refers to the opening gongan of a ladrang or ketawang, or four gongans of the lancaran. These sections are usually repeated, and can be repeated as often as desired. This section is also called the bubuka gendhing, which is not to be...

 and a ngelik

Ngelik

The ngelik is a part of an Indonesian gamelan composition that contrasts from the surrounding section, either the ompak or merong. It is also sometimes called the gendhing proper, in contrast to the bubuka gendhing ....

, each of which typically last one gongan. Ladrang can be played in any irama

Irama

Irama is a concept used in Javanese gamelan music, describing melodic tempo and relationships in density between the balungan, elaborating instruments, and gong structure. It is distinct from tempo , as each irama can be played in different tempi.One way to think of irama is to use the most...

except for lancar.