organistic
/ˌɔːɡəˈnɪstɪk/adjective
1Of or relating to organists or the organ. Now also: (of a different musical instrument) resembling an organ in its sound.
2Of or relating to an organism or organized structure.
Origin
Early 19th century; earliest use found in Thomas Busby (1754–1838), composer and author. In sense 1 from organist + -ic.