Some songs that I remember right off the top of my head:Ain't no mountain high enough
(Ain't no mountain high, ain't no valley low, ain't no river wide enough baby
If you need me call me, no matter where you are, no matter how far...)Forever young
This song is good to learn adjectives, it is an easy song and there's a new version by One Direction which I believe the kids will like.https://www.youtube.com/watch?v=KyTRLocKx-Q
Another classic song:He ain't heavy, he's my brother
(The road is long with many a winding turn...
It's a long, long road, from which there is no return...)
I can't remember songs with both words "young/youth" or "long/lenght" or "wide/width" in the lyrics.