来自《耶鲁大学开放课程：聆听音乐第14集第14集》

and it's a typical eight bar pattern.

这是典型的八小节组合
It's odd how many of these ostinato basses are

真奇怪有那么多固定低音
in eight bar units.

是以八小节为单位的
So it's an eight bar pattern here with Bach.

这就是巴赫的八小节单元
Then all he does is

他所做的
keep throwing over top of that different rhythmic patterns

便是把不同的节奏型叠加其上
and slightly different melodic patterns as well,

再附以略有差异的旋律模型
but that bass

而低音部分
keeps churning away over and over underneath

则在底部周而复始连绵不绝
in that piece for what instrument,by Bach?

这是用什么乐器演奏的呢
Organ, big, powerful pipe organ,

管风琴庞大有力的管风琴
that wonderful, wonderful sound.

演奏出了美妙的音乐