I collect all around, pieces of a time gone past, Many tools exist to remove me, More of me will ever come

I appear as a small package, but I am not small when unpacked. People associate me with Aeroplanes.

What is black when you buy it, Red when you use it, And grey when you throw it away.

I am related to monuments, but I am not symbolic. People often feel fear with me.

You can sometimes find me on a train or bus. Classical music is my tango, but I adore metal just the same. Either way, I always take charge.