I Am I singer ZP Theart says the band's recent line-up overhaul was down to the former members' lack of hunger.
The band parted ways with guitarists Jacob Ziemba and Andy Midgley as well as bass player Neil Salmon earlier this year.
Theart tells GetYourRockOut: "You have to have the hunger, and after all this time, I've still got the hunger. Everyone else doesn't necessarily feel the same way about it as I do, and there you go. Things move on.
"I'm out here to be onstage and do music, and that's all I care about. And I wanna surround myself with people that feel the same way. Onwards and upwards."
The trio's replacements have not been officially unveiled, but a post on the band's Facebook page refers to them as Dean, Gav and Andy. They made their live debuts at the SOS Festival in Manchester this month.
The former Dragonforce frontman also revealed he is working on a follow-up to I Am I's debut album Event Horizon.
He adds: "We've already started writing, so there's a lot of stuff in the kitty already. And we're gonna take the next few months to sort all that out.
"It's a bolder path we're taking, I reckon, and a lot of people are gonna be really puzzled and surprised at the same time. It's new energy. It's new people involved. We're actually sitting in a rehearsal room and coming up with riffs and working it out in the good, old-fashioned way."
ZP Theart on line-up changes and upcoming new album
Review / 23 May 2012Headspace: I Am Anonymous
Adam Wakeman’s band of musical brothers reunite to follow their 2007’s I Am EP with an eight track concept piece.
News / 9 Sep 2014I Am I to tour UK
ZP Theart’s outfit take break from studio for shows with Fahran and Ajenda
News / 17 Oct 2014I Am I lineup ready for live UK dates
ZP Theart’s new additions have gelled and are set for upcoming tour
News / 30 Sep 2014Three Days Grace launch I Am Machine
Hear latest track from Canadian rockers’ studio sessions
News / 17 Sep 2014I Am The Avalanche release 177 promo
View video for track from 3rd album Wolverines
News / 30 Jul 2014Electric Wizard set Time To Die
8th album due in September as they launch 11-minute I Am Nothing video
News / 25 Apr 2015Metallica's St Anger worked for Jimmy Page
Producer Bob Rock says Led Zep hero and White Stripes man Jack White are fans of controversial album
News / 25 Apr 2015Slash and Axl 'still need each other'
Photograher described as 6th member of Guns N' Roses plots plan to reunite estranged duo
News / 25 Apr 2015Megadeth post 1st photo of new lineup
Loureiro and Adler pictured with Mustaine and Ellefson as band work on upcoming album
News / 24 Apr 2015John Lennon vinyl box set announced
Eight of his solo albums remastered for package release