37 : ±âŸ 7ÈÀ½ ÈÀ½ÁøÇà : A-key 1µµ-5µµ7ÈÀ½Step 1. Amaj¸¦ ¤´Â´Ù.
Step 2. 1Áö¸¦ ¶¼¼ 3Çö 1ÇÁ·¿À¸·Î À̵¿ÇÑ´Ù.
Step 3. 2Áö 3Áö¸¦ ¶¼°í, 2Áö·Î 5Çö 2ÇÁ·¿À» ¤´Â´Ù.(E7)