What is the difference between composition and improvisation

a. composition is the art of making spontaneously, while improvisations are carefully planned

b. improvisation is the art of making music spontaneously, while compositions are carefully planned pieces of music.

c. improvisation is the art of performing with others, while composition is the art of performing alone.

d. the music is an improvisation never changes, but the music in a composition is different every time.

i've never seen you when you're smiling

it really gets under my skin

you say it's easy when it's faster

i still can't guess what you're after

it's the colour of your skin

your skin is black metallic

it's the colour of your skin

your skin is black metallic

your skin is black metallic

your skin is black metallic

i think of you when you're sleeping

of all the secrets that you're keeping

you can't stay all day under the covers

'cause under there you'll discover

it's the colour of your skin

your skin is black metallic

it's the colour of your skin

your skin is black metallic

your skin is black metallic

you're turning black

it's the colour of your skin

it's the colour of your

your skin is black metallic

your skin is black metallic

your skin is black metallic

you're turning black metallic

it's the colour of your skin

your skin is black metallic

your skin is black metallic

your skin is black metallic

your skin is black metallic

your skin is black metallic

your skin is black metallic