What is "guitarissimo"

Guitarissimo (stylized as guitarissimo) is the debut studio album by Japanese singer-songwriter miwa. The album was released on April 6, 2011.

The album was originally scheduled to release a week earlier, on March 30; however, due to the Tōhoku earthquake and tsunami which happened prior to the original release date as well as its after-effects, the release date was delayed by a week.