Biwa 琵琶 , a Japanese lute. There are many different pictures with Asian biwa/pipa/bipa. I was wondering why? I have always found different reference images for my Biwa model. That is why I have now investigated and tried to find the differences between the Japanese biwas. I tried to model and assign the 7 Japanese most important ones in the time table. That is the result. Maybe it will help you too. Thank you for your interest.
in addition there is also a short story about Benzaiten. The Biwa goddess of art eloquence and music.
Biwa 琵琶 - Japanese Musical Instrument -Pipa- Gaku/Mōsō/Gogen/Heike/Chikuzen/Satsuma/Nishiki biwa