Answer:
I am a rock group with four members. All dead one was assassinated.
I am a ship that can be made to ride the greatest waves. I am not built by objects, but built by minds. What am I?
I am in the past, never in the future. I don't exist, but have existed. I saw what you saw, and this is what I will ever see. What am I?
I break away from my pack. I create holes in my victims. I can travel for miles and then disappear. I am part of a dying breed. What am I?
I start new then become old. Start clean but become dirty. I usually start big then become little. What am I?
They come to witness the night without being called, a sailor's guide and a poet's tears. They are lost to the sight each day without the hand of a thief.