To delete/delete a sequence pattern on the Arturia Keystep 32, press the SEQ button to access sequencer mode. Use the ENC 1 knob to select the pattern you want to delete/delete. Hold down the SHIFT button and press the REC button. The REC button will flash. While holding down the SHIFT button, press the PLAY button to confirm that you want to delete/delete the pattern. The REC button will stop blinking and the pattern will be erased/deleted.