Editor's Note: First Notes is a weekly update of recent happenings in the world of music.
* Judging singers by their octave range, it turns out that Mike Patton of Faith No More fame is the "world's greatest singer." A published chart compares the range of well-known singers. While Axl Rose topped the initial list, VVN Music claimed Patton after examining more vocal ranges.
* T.I. got in a fight with Floyd Mayweather Jr. in Las Vegas, thanks to social media ... something about Instagram ... does it really matter?
* Kanye West got married over the weekend.
* Wiz Khalifa was arrested in Texas (where else?) for marijuana possession. Making the most of the experience, the rapper Tweeted a selfie from his cell.