As enthusiasts of kissthisguy.com (* see note below) will know, the task of correctly identifying pop music lyrics is not always 100% straightforward. Here’s one to try . . .
Difficulties arise not only for human listeners, but also for computerised speech-recognition systems. In spite of, or perhaps because of its inherent complexity, there are quite a number of academic papers on the subject, some of which can be read in full online. May we recommend. :
* Note: The name of the website derives from the lyrics of Purple Haze by Jimi Hendrix
– specifically line 4, “Scuse me, while I kiss the sky” – which Jimi himself occasionally amused himself by mis-singing as “Scuse me, while I kiss this guy”