What is the name of the background music that plays before Kaori and Kousei's performance?


In Episode 4, right before their performance, Kaori headbutts Kousei, and then
some BGM starts playing. In the next episode, episode 5, as Kousei is running
home in the rain, the same song plays again, and continues into the flashback.
What is the name of the song?

I've transcribed the first part of the song, it gets pretty inaccurate towards
the end but should still be recognizable.

<http://www.noteflight.com/scores/view/e958304d60b8f1a61108335f228623a5e0084cef>




Adding to [my previous comment on the
question](https://anime.stackexchange.com/questions/14761/what-is-the-name-of-
the-background-music-before-the-performance/18728#comment19205_14761), the
official website now has [a page for the **"Your Lie in April original song &
soundtrack"** (「四月は君の嘘 ORIGINAL SONG &
SOUNDTRACK」)](http://www.kimiuso.jp/music/soundtrack2.html). They have a full
listing of the soundtrack there, but you cannot listen to it, nor even preview
it.  
So I did a quick search, and found [this Amazon.co.jp page for the
cd](http://www.amazon.co.jp/%E5%9B%9B%E6%9C%88%E3%81%AF%E5%90%9B%E3%81%AE%E5%98%98-ORIGINAL-
SONG-SOUNDTRACK-TV%E3%82%B5%E3%83%B3%E3%83%88%E3%83%A9/dp/B00PB88GH0), where
you can actually listen to a preview of every song.

Three songs seem to fit the one you want, given that two of them are only
variations on the same theme. The one that does seem to be the exact match is
called **友人A君を私の伴奏者に任命します** (something in the lines of "I appoint Friend-A-kun
as my accompanist"), and is the 18th track on the first cd. You can buy it
individually
[here](http://www.amazon.co.jp/gp/product/B00S1QQ1U8/ref=dm_mu_dp_trk18). The
first variation is the 12th track on the first cd, called **今日のことは忘れられないよ**
(something like "I cannot forget that day"), which, once again, can be bought
individually
[here](http://www.amazon.co.jp/gp/product/B00S1QPSMU/ref=dm_mu_dp_trk12). And
the last one is 7th track on the second cd (or the 40th if you count them
continuously, like Amazon does), called **分かりやすいヤツ** (something like "Easy-to-
understand guy"), which can also be bought individually,
[here](http://www.amazon.co.jp/gp/product/B00S1QQYVO/ref=dm_mu_dp_trk40)




Adding to [my previous comment on the
question](https://anime.stackexchange.com/questions/14761/what-is-the-name-of-
the-background-music-before-the-performance/18728#comment19205_14761), the
official website now has [a page for the **"Your Lie in April original song &
soundtrack"** (「四月は君の嘘 ORIGINAL SONG &
SOUNDTRACK」)](http://www.kimiuso.jp/music/soundtrack2.html). They have a full
listing of the soundtrack there, but you cannot listen to it, nor even preview
it.  
So I did a quick search, and found [this Amazon.co.jp page for the
cd](http://www.amazon.co.jp/%E5%9B%9B%E6%9C%88%E3%81%AF%E5%90%9B%E3%81%AE%E5%98%98-ORIGINAL-
SONG-SOUNDTRACK-TV%E3%82%B5%E3%83%B3%E3%83%88%E3%83%A9/dp/B00PB88GH0), where
you can actually listen to a preview of every song.

Three songs seem to fit the one you want, given that two of them are only
variations on the same theme. The one that does seem to be the exact match is
called **友人A君を私の伴奏者に任命します** (something in the lines of "I appoint Friend-A-kun
as my accompanist"), and is the 18th track on the first cd. You can buy it
individually
[here](http://www.amazon.co.jp/gp/product/B00S1QQ1U8/ref=dm_mu_dp_trk18). The
first variation is the 12th track on the first cd, called **今日のことは忘れられないよ**
(something like "I cannot forget that day"), which, once again, can be bought
individually
[here](http://www.amazon.co.jp/gp/product/B00S1QPSMU/ref=dm_mu_dp_trk12). And
the last one is 7th track on the second cd (or the 40th if you count them
continuously, like Amazon does), called **分かりやすいヤツ** (something like "Easy-to-
understand guy"), which can also be bought individually,
[here](http://www.amazon.co.jp/gp/product/B00S1QQYVO/ref=dm_mu_dp_trk40)

