CREATE TABLE table_74312 ("Track no." FLOAT, "Track" TEXT, "Original Artist" TEXT, "Soloist ( s ) " TEXT, "Vocal Percussionist ( s ) " TEXT, "Arranger ( s ) " TEXT)

Who were the original artist(s) when jack stamp arranged?
SELECT "Original Artist" FROM table_74312 WHERE "Arranger(s)" = 'Jack Stamp'
SELECT "Original Artist" FROM "table_74312" WHERE "Arranger(s)" = 'Jack Stamp'