CREATE TABLE table_204_268 (id DECIMAL, "album/single" TEXT, "performer" TEXT, "year" DECIMAL, "variant" TEXT, "notes" TEXT)

who was the performer on the last album released ?
SELECT "performer" FROM table_204_268 ORDER BY id DESC LIMIT 1
SELECT "performer" FROM "table_204_268" ORDER BY "id" DESC NULLS LAST LIMIT 1