Your search for "f.j. (ja)" revealed the following:

LITTLE JOHN [Ram Jam / 51 Storm]

LITTLE JOHN [Ram Jam / 51 Storm]

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ID No. 226462 Label YOUTH IN PROGRESS (JA) Production JA Genre Roots Rock Reggae70sLate / Male DJ Condition EX Track Give Me The Right Soundclip*リコジョン　デビュー曲。

ERROL SCORCHER [Fork Head]

ERROL SCORCHER [Fork Head]

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ID No. 182627 Label JA HEAD (JA) Production JA Genre Reggae70sLate / Male DJ Condition VG+ Track hypocrite Soundclip* Bad Tune!!!

CULTURAL ROOTS [Only Jah Know / Blackie Blackie]

CULTURAL ROOTS [Only Jah Know / Blackie Blackie]

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ID No. 229970 Label GERMAIN(PRE) (JA) Production JA Genre Roots Rock / [A] Male Vocal Dubwise [B] Male Vocal Condition EX- Track Pck Up Pieces Soundclip

TOMORROWS CHILDREN [Roach Strut (Instrumental)/My Elusive Dream (Instrumental)]

TOMORROWS CHILDREN [Roach Strut (Instrumental)/My Elusive Dream (Instrumental)]

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ID No. 227505 Label BLANK(TIGER) (JA) Production Genre Early Reggae / Condition VG(S HEAT) Soundclip* Organ Cut To Skinhead Jamboree.

THE ETHIOPIANS [So Look Pon It]

THE ETHIOPIANS [So Look Pon It]

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ID No. 193200 Label BLANK( J J PRE) (JA) Production Sir JJ Genre / Condition VG- ( JS ) Soundclip

UNKNOWN MAKE SINGER [Frr-2233-3 / Frr 2234-3]

UNKNOWN MAKE SINGER [Frr-2233-3 / Frr 2234-3]

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ID No. 227510 Label BLANK( E&R) (JA) Production JA Genre Ska / Male Vocal Condition VG- Soundclip* Ver Rare Early Ska