The tenor trombones that survive are pitched closest to B at A=440 Hz, which is the same as A at A=466 Hz. So what we now think of as a tenor trombone with B in first position, pitched at A=440 was actually thought of as a trombone in A (in first position), pitched at A=466. Surviving basses in D at A=466 (E at 440)—for example: Ehe, 1612 (Leipzig) and Hainlein, c.1630 (Nuremberg) confirm Praetorius' description. It is also worth noting that Rognoni's "Suzanne ung jour" setting descends repeatedly to BB, which is a tone lower than the lowest note playable on a bass in F; on a bass in D, it falls in (modern) fifth position.