A Song for Who?

[truehappiness]

No way to say's PV is supposedly connected to her father via fan speculation.

Memorial address and teddy bear: her father
untitled ~for her~ and MY ALL (speculation): her friend, ANEKI aka Ayumi Ogata [I think]
Who... and ever free (apparently?): her grandmother
ASFXX: her mother aka Mariko Hamasaki (I believe that the XX stood for her mother at the time... it was in an interview.)
RED LINE ~for TA~: TeamAyu [all fans] and Bacchi who passed away some time in 2008... (lyrics came from entry about him in TeamAyu and title from the red bracelets that Ayu wears along with Tsuriko to remember Bacchi.)
HONEY: Tomoya Nagase

I think only a handful of these are confirmed for sure... many are speculated, IIRC...

Life - friend who passed away in 2008

Life was the song he wanted to listen to. He liked Life and wanted to hear it before passing away, as he was living when the song was created and passed away about half a year later.