How many pitches are there in a pentatonic scale?

What is a phrase?

How many phrases are there in 'Amazing Grace'?

In the treble clef, what are the pitches in the spaces called?

In the treble clef, what are the pitches on the lines called?

What does the dynamic marking 'piano' mean?

What does the dynamic marking 'crescendo' mean?

If the music has the marking 'flowing', how would we perform it?