Welcome to our roundup of the best websites launched (or relaunched with major updates) in the last four weeks. This month’s offering sees the end of Winter and the beginning of Spring, and many sites this month reflect that change with rich colors. To counter that, there’s some high-contrast black and white work on show. You’ll also find innovative uses of images and video. Enjoy!   Takahisa Mitsumori A leading exponent of digital music, Takahisa Mitsumori is a Japanese musician…