Answer:
I am a rock group with four members all of whom died in plane crashes. Who am I?
I make a living following the wealthy and beautiful.
I am an instrument you can hear but cannot touch or see. What am I?
I am the only thing that place today before yesterday. (one word)
I'm tall when I'm young and I'm short when I'm old. What am I?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.