Sargam spec

This library is a Clojure specification to document Hindustani classical compositions in Bhatkhande notation format.

This library will also support serialization to (and from) JSON.

Compositions can have parts (e.g Sthyai, Antara and multiple Taans) as well as the Taal the composition is set in, or it can be saved with a single part.

A couple of examples:

• A composition with multiple parts.
• A single part

Features

This spec supports the following features of the Bhatkhande notation

Swara

Swaras as denoted by s, r, g.. keywords.

| Feature | Example | | - | - | | Shuddha swaras | :s | | Komal swaras | :-n | | Tivra swara | :+m |

Vishram swara :- and Avagraha swara is :a .

Specifying the octave or saptak

Each note is described by a 2-tuple vector. The first element is the octave and the second is the swara e.g. [:madhyam :s]

Supported saptaks are :ati-mandra :mandra :madhyam :taar :ati-taar.

Notes per beat.

A single note per beat is specified as a vector of maps.

• [{:note [:madhyam :s]}] indicates Sa held for the duration of the beat

• [{:note [:madhyam :s]} {:note [:madhyam :s]}] indicates two half/notes played for the duration of the beat.

Kan swara

Kan swara can be defined as an additional key in the swara map thus {:note [:madhyam :s] :kan [:madhyam :r]}.

Meend

Meend is defined by adding a "meend-start" and "meend-end" key to any note.

[{:note [:madhyam :r] :meend-start :true}] 
[{:note [:madhyam :r] :meend-end :true}]

Taal definition

A Taal definition needs to have

| Feature | Example | | - | - | | the number of beats in a taal | 10 | | The label or name | "झपताल" | | the timing of Sam and Khali | {1 :sam 3 "2" 8 "4" 6 :khaali} | | Bhaags , defined as number of notes per section | [2 3 2 3] | | | |

Here's a complete example {:num-beats 10 :taal-label "झपताल" :sam-khaali {1 :sam 3 "2" 8 "4" 6 :khaali} :bhaags [2 3 2 3]}

Specifying a taal section will automatically imply that the beats are to be synced with the taal that is defined.

License

Copyright © 2019 Studio Kalavati

This program and the accompanying materials are made available under the terms of the Eclipse Public License 2.0 which is available at http://www.eclipse.org/legal/epl-2.0.