Indeed there are. Some were written specifically to be engaging to children:I remember my father - he was a teacher of English Literature - being horrified that the school I was at when I was 9 was trying to teach us Shakespeare. He felt it would put us off for life and forewarned in this way I was really wowed with Shakespeare when I was 15 or so. He was all for boys of 9 reading Treasure Island (a book I still love). There are probably musical equivalents to all this. Certainly, I got into classical music early because I wanted to and I wanted to because it was all around me. Mozart came first.
But what of children who grow up in houses with no or few books and no classical music? How are they going to get access or guidance? Much could be done in schools but too many schools are environments that alienate kids and make them feel they are "on the other side" to their teachers. I doubt such schools could do anything with music even if they had the money to include it in their curriculum.
Saint-Saëns – Carnival of the Animals
Prokofiev – Peter and the Wolf
Others seem to captivate children despite the work not being specifically child-oriented. A lot of Tchaikovsky seems to pop up as child-friendly:
Tchaikovsky - 1812 Overture
Tchaikovsky - Capriccio Italien
Tchiakovsky - The Nutcracker
Tchiakovsky - Swan Lake
Mozart – Eine Kleine Nachtmusik
Bizet – Overture to Carmen
Vivaldi - The Four Seasons
Handel - Water Music
Elmer Bernstein - Theme from The Great Escape
Grieg - In the Hall of the Mountain King
Beethoven - Symphony No. 5