I've been following Irina Gorin's piano students through her posted recitals at you tube, besides knowing that they have been raised on her Tales of a Musical Journey instruction. But these results are for me extraordinary.

http://arioso7.wordpress.com/2011/11/23/when-great-piano-teaching-must-be-recognized/

Each child has been nurtured along with an awareness of the singing tone and how to produce it.