What's the music that plays at the end of ep. 22 of Shigatsu wa Kimi no Uso? What's the music that plays at the end of ep. 22 of Shigatsu wa Kimi no Uso, when Arima is reading Kaori's letter?

I saw this anime a long time ago and want listen this music now, but I can't find it.
The piece is called "31 - Kimi ga Iru"
It is in the OST album for the anime, Disc 1.

Followed by "05 - Kirameki ~Kousei to Kaori no Ensou Ver.~" from the ED single "Kirameki" album.

So basically it starts off as Kimi ga Iru, then Kirameki chimes in.

The piece before that is "17 - Kouiu Kimochi wo Nante Itta Kana" if you're interested.