Hello Peacesoldier and welcome to the forum.
I would urge you to first read about what reincarnation is, perhaps in the many books available, and or, the web sites out there. BUT, remember to be discernible and approach everything with an air of caution. It could be disappointing to jump to any conclusions! The fabric of who you are today, in my opinion, is the result of many lives. The vestiges of past lives appear, to the observant person, in the form of our fears, phobias and dreams. Some people sense these memories in their own innate patterns and activities of everyday life.
What you describe could be related to a myriad of scenarios. If you are serious about learning about past lives first understand the concepts. Then utilize one of the methods to explore your deep conscious mind to see if you are able to remember. Not everyone does. There are some here who do not remember anything but still believe in reincarnation, and have a strong sense that they had past lives.
I see that you have three premonitions, an era (60s-70s), an affection for a genre of music, and a fear of guns and explosions. I would suggest a practice of meditation, emptying your mind. There are many books and tapes on the topic. If you have the resources, a class on meditation would be great. In my opinion the most effective way to explore past lives is with a Past Life Regression Therapist. Reputable therapists are trained to guide you through the discovery process.
Lastly begin to journal your thoughts, ideas and discoveries. In a few years you will be able to read how you began and then the progress you've made. In my experience, some of the early entries will seem so insignificant compared to your "big picture."
Good luck and feel free to ask any and all questions.
Tman