They could have told him that though if it's the case, and the mystery would be solved. But there obviously wasn't any desire (or more charitably - time) on their end to really look into the reasoning or even understand the question.
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Edit: I will share what I think is a nice a little counterpoint story here, from a business that is clearly still interested in understanding. I sent Lego an email a while ago:
I'm just wondering if you're able to tell me what the
tune is that the Lego Primo musical camel plays in set
number 2007. It's a set from 1998. We have the camel and
it plays a nice tune, but no-one seems to know what it is!
They replied a day later:
Thanks for getting in touch with us.
This is a really really really and I mean really interesting
question you got there for us. I have checked with all the
resources I have and come to a possible conclusion.
The Musical Camel – which in Denmark actually is called
‘PRIMO Dromedar'. 1st theory is that, One DUPLO-designer
says that the melody was composed by the designer that
created the camel but no one remembers the name who created
the Musical Camel. Another thing is, one of the engineer once
had a musical box that had the same melody but he is no
longer with us anymore and cannot provide us the answer.
I am so sorry that, at the end of the day I cannot provide
you with any name to the title. But I hope the facts can
make a good story for you to tell your friends.