Stressful and not particularly attractive

First of all: I have the CD only borrowed me to see whether I should buy it. I will not do after listening - how exhausting and annoying can it be music for children?
The rhythms stress either (at the snappier songs) or sound dingeldong-synthetically in the quiet numbers.
(At this point, a great tribute to the Ritter Rost-producers, that is for me good-quality music)
But it's really about math and numbers.
Well, the latter occur. If many children sing at once, unfortunately, a little indistinct, otherwise one wonders why it takes songs to convey that a number plus zero is the same number, which is twice or a single digit number.
There are yet more pleasurable didactic means, right? Or even human contact which can one convey this?
Maybe find kindergarteners in the first year the CD thrilling - otherwise the children should have their time rather knead, paint or do gymnastics with spending that has more sense in my opinion.