Can you read music?

I learned how to read music when I was a kid in music class, but I never had applied it much to my playing music other than a piano class.  I just bought a piano and am trying to learn some songs and am realizing that the sheet music in books is wrong.  I picked up a beatles songbook from the library and I know its not right.  Why is that?  Why doesn't the transcriber transcribe what the writer intended?  It seems to me that unless you palay classical you'd better have a good ear because your on your own.  Can anyone help me?

Yes.

You hum it I'll play it   

Und jetz spielen wir die overture zu den Meistersangern von Nurnberg !

Great idea Sock!We'll  show them what true showbiz is all about,Ready? 

I play trombone

https://youtube.com/watch?v=fxOcd38i5ukTg

Now we has Jazz?

Bill Evans FTW

Take  some skins

Jazz begins

Take a bass

steady pace

Take a box

one that rocks

Take a blue horn New Orleans born

Take a stick

with a lick

Take a bone  Dixie grown

Take a spot

Cool and hot

Now you has Jazz jazz jazz jazz jazz      

I can read alto clef

Because I play viola

I can read tenor clef as well

I’m playing this piece called Cavatine

Wat??!

My orchestra is preparing for our winter concert, I’m in elementary school so it is a relatively intermediate concert though, I am lead viola.