Wikipedia
Borgeets (, songs celestial) are a collection of lyrical songs that are set to specific ragas but not necessarily to any tala. These songs, composed by Srimanta Sankardeva and Madhavdeva in the 15th-16th centuries, are used to begin prayer services in monasteries associated with the Ekasarana Dharma; and they also belong to the repertoire of Music of Assam outside the religious context. They are a lyrical strain that express the religious sentiments of the poets reacting to different situations, and differ from other lyrics associated with the Ekasarana Dharma. Similar songs composed by others are not generally considered borgeets.
The first Borgeet was composed by Srimanta Sankardeva during his first pilgrimage at Badrikashram in c1488, which is contemporaneous to the birth of Dhrupad in the court of Man Singh Tomar (1486-1518) of Gwalior.