Argent was initially the group's lead singer, with Blunstone on guitar. When Argent's keyboard talents became apparent, he became the group's full-time keyboard player, conceding the role of lead singer to Blunstone.
In 1999 Argent recorded a solo piano album, Rod Argent Classically Speaking, in which he played Chopinétudes and music by Ravel, Bach and Grieg, as well as three of his own compositions.
Argent and Blunstone have continued to perform together, and in 2004 they recorded a new album, As Far as I Can See, in the style of the Zombies. Subsequent album and DVDColin Blunstone & Rod Argent of The Zombies Live at the Bloomsbury Theatre received favorable reviews, as did their 2007 US tour. One critic noted, "The Zombies, still led by original keyboard wizard Rod Argent and featuring the smoked-silk vocals of Colin Blunstone, is the best 60s band still touring which doesn't have Mick Jagger as a front man".