Jalasaila ~upd~ Direct

is the rāga mudrā (name of the rāga embedded in the lyrics) found in the popular composition: "Jalasaila vihāra" (or similar variants) — often in Rāga Kīravāṇi or Rāga Jalasaila (which is a janya of 21st Mēla Kīravāṇi).

The most well-known kriti containing this phrase is: or "Jalasaila vihāra ramaṇa" — dedicated to Lord Rama or Vishnu, describing Him as one who dwells in the ocean (Jalasaila = ocean-mountain? Actually, "jala" = water, "saila" = mountain; combined could mean "ocean" metaphorically, or a mountain surrounded by water). jalasaila

If you're referring to the famous piece in Carnatic music, it is most likely the composition: is the rāga mudrā (name of the rāga