R_1148_vartani_definition
Vartanī: prabandha using graha/nyāsa per aṁśa, naming patron+singer, sung with svaras in tālas other than kankāla/pratitāla/druta-maṇṭha/kudukkaka
Body (pseudocode)
DEFINE prabandha(vartani) := composition WHERE (graha,nyasa) follow amsa AND includes(patron_name, singer_name) AND tala NOT IN {kankala, pratitala, druta_mantha, kudukkaka}