The singer said he found being a pop star "unfulfilling" by the time he left music behind in 2006, and said his group can't be compared to stars like Lady GaGa, who he sees as a "money making freak".
He said: "Lady Gaga is a money-making freak for her label. Jamiroquai are not like that. We do music, not marketing.
"I left because I was finding the job unfulfilling. I was tired of going onto kids' TV programmes to promote myself. We're a proper, jamming band. That's why we're called Jam-iroquai!"
He also said modern pop music doesn't connect with him in the way he imagines music should.
Jay, 40, added to the Daily Mail newspaper: "Music should have a flavour to it and I don't think a lot of what's going on today has that,' he says, choosing his words carefully. I listened to the top five songs recently and they did nothing for me."
Jay - who has sold over 25 million records in his career - also denied he is now staging a comeback, with his new album 'Rock Dust Light Star' saying he only makes music because of the buzz he gets from it.
He said: "This is in my blood. Money doesn't come into it. I get a buzz from writing songs."
'Rock Dust Light Star' is available now.