John Joseph Slater (1872- 16 May 1926) was an Australian composer of popular and light classical works.
He wrote under several alias names and is commonly known as Felix Le Roy.
[1][2] Slater was active in variety theatre, particularly the company of Harry Rickards[3] His mature works include a series of favourably mentioned [4] impressions for cornet, violin and piano trio - Bells of Peace, Spring Morning and Day Dreams.
Slater's song A Faded Leaf of Shamrock sold six editions.
[5] Slater's more popular variety theatre pieces [6] enjoyed larger reprints, especially One of these Days ran to a hundred and seventy five editions.