Meyo Registo 2o Tom Accidental

I could find very little information on this composer. If anyone can provide some, I'd be very grateful.

The activity of organists who worked in the north of Portugal during the seventeenth century, is stored in two important manuscripts that are preserved to the present day:

The last one, also known as the book of CONCEIÇÃO, by FREI ROQUE DA CONCEIÇÃO, contains only three works for organ. One of those is this piece.

The composition technique and the imitative polyphony are typical for composers of the seventeenth century, exploring the feature of the divided keyboard.

The peninsular organs of the 17th century were mostly divided on the central C;
soft and loud stops divided between the two halves of the keyboard. That way a variety of combinations was possible, imitating a two manual instrument.

In this piece for devided keyboard the left hand plays the accompaniment on the left side of the keyboard, while there is a strong voice “improvising” in the right hand.

The piece starts in 4/4 counting; halfway through changing to ¾.

The first half is played with the solo Cornet in the right hand; the second part with the Clarin 8’.