Joni Mitchell

Joni Mitchell redefined songwriting with her poetic lyrics and unconventional guitar tunings, earning the highest critical acclaim of any female artist in history. Her 1971 album *Blue* spent 85 weeks on the Billboard charts, a run that is 30% longer than the typical top-20 folk album. Mitchell’s influence extends beyond sales: she was named the most important female artist of the 20th century by *Rolling Stone* in 2015, a direct comparison that places her above #9 Tina Turner in legacy metrics. Her use of open chord voicings appeared in over 3,000 cover versions by artists ranging from Prince to Prince, proving her impact is faster than the average singer-songwriter’s in cross-genre adoption. The album *Court and Spark* sold over 4 million copies, cementing her as a benchmark for lyrical sophistication.