There are multiple artists who use this name:
1) BAKER (BAKER YA MAKER & BAKER PHONK) is a phonk rapper and producer part of Devilish Trio from Nashville, Tennessee. Part of DOOMSHOP RECORDS.
2) baker (also part of baker & kisk) is a successful VOCALOID producer, often working with 初音ミク. Recently he has been supporting other authors, rather than uploading his own original VOCALOID works. As a co-producer or arranger of many hit songs, he is still in an important position.