In September 2011 , Sakanaction released their fifth studio album '' Documentaly '' , which had reached number two on the Japanese Oricon albums chart ; the highest position achieved by the band in their career at the time . The album was strongly affected by the events of the 2011 Tōhoku earthquake and tsunami which had occurred in March of that year , during the promotional period for their single " Rookie " . The band 's vocalist and songwriter Ichiro Yamaguchi felt a new resolution to create music that would resonate with a general pop music audience , who listened to idol acts such as Girls ' Generation and AKB48 . As rock music was no longer a popular staple during the early 2010s in Japan , Yamaguchi felt that the reasons people listened to music had changed over time , and wanted to mix rock music with entertainment-focused music in order to give these people the type of music that they look for
2011 Tōhoku earthquake and tsunami
2011 Tōhoku earthquake and tsunami
Sakanaction (album)