Why aren't there more musical instruments in children's books?

<b>http://tinyurl.com/9twm742 - <a href='http://tinyurl.com/9twm742'>Paul Dresher's Raw Funkiness</a></b><p>Paul Dresher&#39;s Raw FunkinessDresher, who considers himself a &#39;credentialed rock-and-roller&#39; ("I still play the electric guitar"), plucks the strings of the Quadrachord, but also uses a double-bass bow and all kinds of mallets, sticks and other percussion tools on the instrument ...and more&nbsp;&raquo;</p><B>The Story of Jake and a Rock on Mars</b><p>The NationOperating a vehicle on the surface is different because you can&#39;t simply write a program months in advance that points instruments and takes photographs or measurements. This realization developed while operating the Viking landers (1976-1980), a pair ...Martian Weather Report – Gale Crater Set For Possible Heat WaveRedOrbitRoving Curiosity at Work on Mars Searching for Ingredients of LifeUniverse TodayMars: Curiosity&#39;s DAN Instrument Suggests Gale Crater Drier Than ExpectedScience Daily (press release)Zee Newsall 173 news articles&nbsp;&raquo;</p><B>Why aren't there more musical instruments in children's books?</b><p>Why aren&#39;t there more musical instruments in children&#39;s books?Prokofiev&#39;s Peter and the Wolf, for example assigns a different instrument to each character. So you can easily recognise sprightly Peter in the strings, the stately grandfather on the bassoon or poor duck on the oboe, miserably quacking inside wolf&#39;s ...</p>