Everyone has their favorite singer, their favorite band, and their favorite type of music, and they are ALL DIFFERENT - such is the nature of the beast. We can argue day and night about who is right and who is wrong, but the truth is simply this: we all are. Choosing favorites in the music world is as subjective an activity as there ever was€ generally speaking. However, the following list of the 5 best voices of all time is absolutely indisputable. Nothing you can say can alter the fact that these five men and women have voices that defy logic, that contradict the basic principles of human physiology, and that are somehow able to lift us out of our bodies and up to enormous heights that are sometimes dark and sorrowful and other times brilliant and joyous. They are the best at what they do, not by virtue of training or money, but because they were given the divine gift of a direct connection between their raw souls and their mouths. I dare you to disagree.
5. Freddie Mercury
The Queen front-man with the enormous mouth (Gotye would be jealous) and the bushy stache had the voice of an angel--and that's not like how you describe your precious-but-really-quite-terrible niece's singing voice, but rather that of an ACTUAL ANGEL. Mercury can transport you to dizzying heights with the sometimes graceful, sometimes jarring rise and fall of his vocals, taking you beyond the limits of your expectation and into a brand new world of sound that you never knew existed.
References: "Under Pressure" (Hot Space), "Bohemian Rhapsody" (A Night at the Opera), "I Want to Break Free" (The Works)