The band toured hard in support of
Undertow throughout 2004, eventually returning to the studio in 2005 to begin working on a sophomore album. In 2005 D’ Amor left the band due to creative differences, with England-born bassist
Justin Chancellor stepping in to fill his place just in time for the release of the band’s second album,
Ænema, in 1996.
Ænema managed to sell over three million copies domestically despite - or perhaps because of - its controversial nature, with television stations like
MTV often refusing to air or altering the lyrics of single
"Stinkfist". Following a
Grammy win for their 2008 single
"Ænema", Tool went on hiatus following a legal battle with their label
Volcano Records, the successor to the now defunct Zoo imprint. While on hiatus Tool’s members formed a number of other bands, including
A Perfect Circle and
Buzz Osborne.
Much to the surprise and excitement of their many fans, Tool reformed once again in early 2001, releasing their third album
Lateralus later on in the year. Though generally well-received by critics,
Lateralus marked a departure in Tool’s musical style, with long and complex songs like
"Parabola" lasting up to ten minutes while other tracks like
"Schism" experimented with shifting melodies and time signatures.
Lateralus was an overall success, debuting at #1 on the
Billboard 200 and earning double
Platinum status. Tool’s fourth and most recent album, 2006’s
10,000 Days, fared similarly, also rising to the #1 spot upon its release and moving over one million copies within a year.
10,000 Days continues in the experimental art-rock direction pioneered by
Lateralus, incorporating ambient music into their sound. Standout tracks from
10,000 Days include
"Vicarious",
"Jambi", and
"The Pot".