Maki Asakawa was a very talented lady; in addition to her abilities as a singer, she was also a composer who arranged most of her pieces, both original and covers. On top of that, she wrote all of her own lyrics, but, big deal, right? Plenty of people do all of that without breaking a sweat. However, Maki had thirty releases by the end of the '90s, which gives you an idea of just how prolific she was (she started in the late '60s/early '70s). If that wasn't enough, she literally did this until the day she died, at age 67, just before a show in 2010. Rest in Peace, Maki.
Who are your favorite prolific artists?