I recently became aware of the phenomenon of absolute pitch--the ability to identify a pitch without external reference. I am almost certain I have this ability--I get annoyed by out-of-tune pianos, and I can essentially remember long pieces of music and play them back on a piano months later (think 20 minutes long).
I'm curious if this ability has impacted my ability to learn languages, and particularly to mimic native accents.
Because I grew up in Guangzhou, China, my first language (only learned informally) is Cantonese. In elementary school I formally learned Mandarin (the first thing they teach explicitly is pronunciation) in Grade 1, and it is the only way I know how to type Chinese characters. The Chinese school system begins teaching children English in Grade 3, but it is very slow and limited.
When I immigrated to Canada I had to learn English much more quickly and intensely (that was Grade 8). What is interesting, is that (and I noticed this myself, as well as hearing comments from native English speakers) I do not have an accent. I remember a teacher saying "oh, I thought you were born here [in Canada]" when I told her that I immigrated to Canada only a few years ago.
Of course, this is only about spoken language. On handwriting, I had forgotten how to write some very basic Chinese characters because I use a computer to type these characters 99% of the time (I only need to know how to pronounce the character in Mandarin to type it).