NEW YORK (AFP) - Alanis Morissette, a feminist rocker whose hits in the 1990s voiced the angst of a generation, on Monday (Dec 2) released new music off her upcoming album - her first in eight years.

She also announced a 2020 tour.

The 31-stop tour will launch in June to mark the 25th anniversary of her seminal album Jagged Little Pill.

The Canadian rocker will be joined by her alt contemporaries Liz Phair and Garbage.

Morissette, 45, offered fans a tease of her ninth studio album Such Pretty Forks In The Road, due out on May 1, dropping a lead single Reasons I Drink.

Jagged Little Pill was met with critical and commercial fanfare.

On smash songs including Ironic, Hand In My Pocket and You Oughta Know, Morissette sang of the moody contradictions and frustrations of the era's youth.

The 1995 album is also the basis of a Broadway musical, set to open in New York on Thursday (Dec 5).