As part of a series of core titles that include the wildly popular Wii Sports, Wii Play and Wii Fit, Nintendo was expecting big things from Wii Music when it hit the shelves on October 20th.
Sales figures so far do nothing to back up these ambitions as in the first 11 days just under 81,000 units were sold, according to raw NPD data.
'Flop' would be too harsh a term to use at this early stage, but when you consider that Wii Fit sold just under 688,000 units in a similar period earlier this year it must be causing concern in the Nintendo camp.
Reasons for the low sales figures are that unlike the other key titles there's no innovative new hardware supplied with the game. The rhythm gaming market is also well covered by best-sellers like Rock Band and Guitar Hero and perhaps consumers are deciding that there's just nothing special enough about Wii Music to justify the expense.
Nintendo isn't panicking and uses the example of games like Brain Age, which started slowly but went on to sell 2.5million copies, as a more comparable model than its traditional best-sellers.