Classical horn crook combinations for A=440, 430, and 415

With the full set of crooks, couplers, and long tuning slide offered with the Halari and Courtois classical horns, it is possible to play in all of the necessary keys at three pitch levels - A=440, 430, and 415.

A = 440 (and 415)

C alto – C alto crook + short slide

B natural alto – C alto + short slide, pull slide (A=415 C alto)

A – A crook + short slide (A= 415 Bb alto)

Ab – Ab crook, short slide, or A + long slide (A= 415 A)

G – G crook + short slide (A= 415 Ab)

F# - Bb alto + short coupler + short slide (A= 415 G)

F - F crook + short slide (A= 415 F#)

E – E crook + short slide (A= 415 E)

Eb – Eb crook + short slide (A= 415 E)

D – D crook + short slide, or F crook + short coupler + short slide (A= 415 Eb)

Db - E crook + long coupler + short slide (A= 415 D)

C basso – C crook + short slide or Eb crook + long coupler + short slide, pull slide (A= 415 Db)

B natural basso - D crook + long coupler + long slide (A= 415 C basso)

Bb  basso – C basso crook + short coupler + short slide, or Eb crook + short and long couplers + short slide (A= 415 B natural basso)

A basso – D crook + short and long couplers + long slide (A= 415 Bb basso)

A = 430

C alto – C alto crook + short slide, pull slide

B natural alto – C alto + short slide, pull slide

A – A crook + short slide, pull slide

Ab – Ab crook, short slide, or A + long slide , pull slide

G – G crook + short slide, pull slide

F# - Bb alto + short coupler + long slide

F = F crook + long slide

E – E crook + long slide

Eb – Eb crook + long slide

D – D crook + long slide, or F crook + long coupler + short slide

Db = E crook + long coupler + long slide

C basso – C crook + long slide or Eb crook + long coupler + long slide, pull slide

B natural basso - D crook + long coupler + long slide, pull slide

Bb basso – C basso crook + long coupler + short slide, or Eb crook + short and long couplers + long slide

A basso – D crook + short and long couplers + long slide, pull slide