これで8弦
https://pbs.twimg.com/media/Cc77T-1UMAADj4L.jpg
これで15弦
https://stat.ameba.jp/user_images/20110303/16/combat-guitars/bf/69/j/o0640042611087113339.jpg
これで36弦
https://i.pinimg.com/originals/9f/b0/b2/9fb0b239e3fac59874db744bc25e15ee.jpg
これで42弦
https://i.kinja-img.com/gawker-media/image/upload/s--RBgsXUV---/c_scale,f_auto,fl_progressive,q_80,w_800/18s01rxyxaf2bjpg.jpg