After six years of studies, he earned a Master's degree in Jazz Vocal Performance.

VOA: standard.2010.04.02

What's interesting are all of the vocal nuances so let's listen to just a bit of this please.

感受人声中有趣的微妙变化,让我们一起听一下

耶鲁公开课 - 聆听音乐课程节选

Pop music tends to have a vocal part.Why?

流行乐通常有声乐部分，为什么？

耶鲁公开课 - 聆听音乐课程节选

Liu was a vocal critic of a scandal-marred city payroll-technology project and has rapped Mayor Michael Bloomberg's administration for not reaching new labor agreements with many unionized city employees whose contracts have expired.

WSJ: Big NYC public-employee union picks Liu for mayor

Running through the track as if it were a looped keyboard hook, Morrison's backing vocal provides a nice counterpoint to his showier lead, on which he passionately mourns a love gone wrong.

NPR: Pop and Soul, with a Ghostly Moan

He has a solo -- or a harmony part, or a lead vocal, or a single perfect guitar lick -- in all the important chapters of the past 50 years.

CNN: Watson leaves notes strung through music history