Important clarification from PCED on Sung Masses offered by Bishops.

In recent years it has become more common for bishops to celebrate Sung Mass more sacerdotali, that is, just as priests do and without the sacred ministers (subdeacon, deacon and assistant priest) and ceremonies peculiar to a Solemn Pontifical Mass. This has to do with the difficulty in most places of having enough sacred ministers, and the desire to have something like a Solemn Pontifical Mass