Every artist learns through imitation, but I rather doubt the aim of these things is artistic development. I assume they're either homages or satiric riffs, and are not intended to be taken too seriously as works in their own right. Otherwise I should be talking to a copyright lawyer.
Yesterday, I was sad, tomorrow i may be sad again, but today i know that i am happy. I want to live on and on, delighting like a pagan in all that is physical; and i know that this one lifetime, however long, cannot satisfy my heart.