I'm not sure that we have discussed this before as a general topic. It seems that Motown had an enormous volume of ready-to-release material that was eventually cancelled. The Supremes alone had Sing Ballads and Blues, the Disney album, There's a Place For Us and more.

So two topics for discussion: 1) I wonder if there is a definitive list of Motoen cancelled material [[this would not include material that was recorded but just remained unreleased), and 2) Did Motown indeed have a higher volume of cancelled material than other contemporary labels, or is it that due to our forum sleuths we just know more about the Motown cancelled material?