According to the official site, a popular anime song musician Eri Kawai passed away on Aug 4. Her masterpieces are given below.
Madoromi no Rinne (Utawarerumono ED)
Undine (ARIA The Animation OP)
Euphoria (ARIA The Natural OP)
Spirale (ARIA The Origination OP)
Tanpopo Suisha (Sketch Book -full colors- OP)
Bamboo Beat (Bamboo Blade OP)
Star Rise (Bamboo Blade OP)
Source: Kawai Eri Official Web Page
She died of liver cancer. She was 43 years old. Her funeral was held on Aug 7.