Songwriters do use their version of lorem ipsum. That said, they cannot use one and only set of lyrics (such as the above) for all songs they write, because th

Songwriters do use their version of lorem ipsum. That said, they cannot use one and only set of lyrics (such as the above) for all songs they write, because the appropriate "lorem ipsum" for each song depends on its form (melody, rhythm, number of verses, etc). They (well, we) use those "lorem ipsum" placeholder lyrics when they first compose the music, to mark the phrasing they want to achieve. It can be either gibberish or meaningless rhymes. In one famous example, Paul McCartney famously wrote Yesterday's lyrics based on the placeholder: "Scrambled eggs. Oh my baby how I love your legs.".