Tariff classification change removes pianos and similar instruments from Schedule four, altering GST applicability by notification. Tariff heading 9201, covering pianos and other keyboard stringed instruments, was omitted by notification no. 43/2017 effective 15-11-2017, removing the prior Schedule Four description 'Pianos, including automatic pianos; harpsi-chords and other keyboard stringed instruments,' and thereby altering the item's prior GST applicability under the schedule.