"Ddu-Du-Ddu-Du" is primarily written in the key of E minor while borrowing some notes from the E Phrygian scale at 140 beats per minute, common time.
"Ddu-Du-Ddu-Du" utamanya ditulis dalam kunci E minor sambil meminjam beberapa not dari E skala Phrygian pada 140 ketukan per menit, waktu umum.