"I'm not by the way suggesting a short period of time before that cumalitve effect would be removed, but after for example a year it might be reasonable to consider it. "

That sounds reasonable to me

By the way, it's not a copyright violation to quote lyrics as long as the name of the composer and the name of the song are credited and the lyrics are not used in a disrespectful manner. As a writer, who now and then quotes lyrics and passages from books and such, I've had to learn about this aspect.

Talent is God's gift to you. Using it is your gift to God.