Sony Mobile has updated the Music app to version 9.1.6.A.1.1beta. This is a big-fix update which fixes art-related issues within notifications, widgets and lock-screen that occurred in the last update (9.1.6.A.1.0beta). The last update brought about a new launcher icon and updated colours. However, it also removed SensMe. It is worth noting that given the change in databases, when updating to this version, your album/artist art will be removed.
DOWNLOAD APK: Music (9.1.6.A.1.1beta)