CREATE TABLE table_203_137 (id DECIMAL, "title" TEXT, "album details" TEXT, "peak chart positions\ us" DECIMAL, "peak chart positions\ us r&b" DECIMAL, "certifications" TEXT)

what canibus album was released before the album titled 2000 b.c ?
SELECT "title" FROM table_203_137 WHERE id = (SELECT id FROM table_203_137 WHERE "title" = '2000 b.c. (before can-i-bus)') - 1
SELECT "title" FROM "table_203_137" WHERE "id" = (SELECT "id" FROM "table_203_137" WHERE "title" = '2000 b.c. (before can-i-bus)') - 1