Janis Joplin Syndrome is when a music
group has a female singer that becomes just as if not more famous
than the band she is in. Named after
Janis Joplin who was originally a member of a blues revivalist group called Big Brother and the Holding Company. If you know anything
history, you'd know that Janis left BBATHC after
a 2-3 year stint
with them to start
a short lived but widely successful solo career.
70% of cases of JJS often end up with either the singer going
solo (see The Supremes, No Doubt and Destiny's Child) or worse, the singer being the only original member left, somewhat like Axl Rose Syndrome
(see Evanescence). Most of the time, all-girl bands
are immune to JJS with a few exceptions such as the Bangles.