脚本 — 王力宏
This song has 6 keys. It goes from E to Ab, then to F, to A, to F# and then to Bb.
There really are just 2 parts though. Part 2, Part 5 and part 7 are the same thing played in 3 different keys, i.e., E, F and F# respectively.
Part 3, Part 6 [...]