[quote=Roger Brown]
...changing tense, too many characters...
To be fair those things are matters of grammar & written language that can, & should, be learnt quite early in one's school life.
Plural agreement, tense, choice of "voice", consistency ...another bunch of rules that can be very helpful writing an email or a song BUT if not the initial building blocks are often the polish applied after the creative burst that can help the communication.
I'm quite a stickler for those thing in my own writing but many of the songs & lyrics I love disregard them.