It may have been more helpful to explain that in the first place, or at least once we started to question what it was that you wanted. My first question in the thread -

"Could you expand a bit on what you are looking for; do you want songs that have had an influence, which implies getting frequent airplay and being well known; or songs which have a definite message e.g. political, but not necessarily well known?" -

still hasn't been answered. All I was asking is what you mean by influence. If you don't know that yourself it makes it difficult for me to give relevant answers.