Physical album still sale the most, stop making excuses. Mariah's last album was a christmas album that was certified gold, and it was only out for less than 2 mnths. "Memoirs" went gold because it only had one big hit, and it was more of an conceptual album, but Mariah still can and will sell far more than that. Lots of people buy physical albums.Itunes is big as far as singles are concerned, look how cheap they are. Anybody can purchase a single for $1 and 29 cents.