Boasting wise-beyond-her-years vocals and a pop precocity that fused alt-era edginess with intricate, informed songwriting, Fiona Apple made waves as soon as her debut, Tidal, landed. Her deep knowledge of music—jazz, soul, calypso, hip-hop—informed the artistic leaps she'd take on her later records, jolting “Fast As You Can” with a frenetic improvisatory feel and adding deep-down despair to the lush lament “Oh Well.” Apple's discography is full of grippingly honest, musically adventurous songs that cement her status as one of pop's most original personalities.