The answer to this is Anaphora. You can check out the different statements available. You will see that the word “singing” is repeated countless times. In fact, the word singing is used to begin each of the clauses in the whole statement. This means that this word is being emphasized which is characteristically is an Anaphora. An alliteration is the occurrence of the same letter or the same sound for each clause.
This is normally used for tongue twisters. A paradox, on the other hand, is something that is contradictory to what has been said or show previously. A juxtaposition is the comparison of two completely different things.