John's speaking voice/accent
Listen to John's speaking voice throughout the decades. In AHDN and Help!, you hear his thick Scouse accent. I thought I recall hearing around the time of when Pepper was being recorded, possibly during "Strawberry Fields" sessions, George Martin said John wanted the sound of singing voice to change. That may have been due to slowing the tape speed down somewhat. Maybe the style of singing voice also changed around this time. I have noticed a kind of change in his singing voice as well from when you listen to his voice in 1964 sounds a bit diffrent in 1980. I want to say around 1969-1970 when I hear John in interviews, his voice sounds kinda like on helium. I use the word helium as a metaphor because his Liverpool accent sounds like its thinned out as opposed to how he sounded in 1965-67. Either he had a way of controlling the way his accent/speaking voice sounds or maybe it did thin out somewhat when he moved to NYC and being away from England all those years.
There was a thread going on for this on the official Macca forum that gave the idea for this thread:
http://macca.devstars.com/phpBB2/viewto ... highlight=