Their voices in the song "Sora mo Kokoro mo Hareru Kara" which is included in the second Love Live! Sunshine!! Anime Blu-ray are filled with emotion. Honestly, I've almost cried twice because of how good the ballad is. Anju Inami, Rikako Aida, and Saitou Shuka did a great job in giving the feelings of wishful thinking and hope to the song. I love it and I love them!

Original Song:
Chika Takami, Riko Sakurauchi, You Watanabe - Sora mo Kokoro mo Hareru Kara
Chika, Riko and You by 傘list:
http://www.pixiv.net/member_illust.php?mode=medium&illust_id=58154758

Because Our Hearts Will Clear Up Just Like The Skies (PolariS Remix)

An ordinary producer who mainly remixes Japanese songs.