" It's a combination of acoustic instruments, but also very trashy robot instruments, " he added.

“这是声学乐器的组合，但也是非常无用的机器人乐器，”他补充道。

Virtually all acoustic instruments produce harmonic series, but each instrument’s shape and material changes the balance of its harmonics.

几乎所有声学乐器都会产生谐波系列，但每种乐器的形状和材料都会改变其谐波的平衡。