Buff is also a soft cloth used to rub a surface until it looks bright and shiny.

VOA: special.2009.05.17

So a bright, shiny major and then dark minor.

所以明快,阳光的大调然后是灰暗的小调

耶鲁公开课 - 聆听音乐课程节选

It is a beautiful wall covering made of shiny,bright golden silk.

VOA: special.2009.10.30