The rocker, who now plays with animated band Gorillaz, struggled through Blur's tour for 2003 album THINK TANK - but was saddened by playing songs the pair had collaborated on, because they sounded hollow without Coxon.
Albarn says, "I got sick of the ritual of performing. I never really liked the last Blur tour. I hated playing the old material. I just found that really depressing without Graham.
"It was a painful experience to play songs that belonged to a band where one member was missing."