楽員 is read as がくいん (gakuin) and means bandsman.
がくいん
gakuin
がくだんいん
orchestra member
たのしみ
anticipation
らく
(economically) comfortable
たのしい
enjoyable
たのしむ
to look forward to
らくてんか
optimist
がくや
behind the scenes
らくらく
comfortably
らくてん
optimism
たのしげ
happy
がくじん
musician (esp. Gagaku)
らくじん
carefree person