10

Welcome to the wonderful world of transposing instruments. As you've identified, the factors at play here are: The flugelhorn is indeed a transposing instrument, in Bb. That means it plays a tone (not semitone) lower than written. If you play a written C on a flugelhorn, it will really be a Bb. The flugelhorn is a wind instrument, which will not play in ...


7

Flugel is far more conical than cornet. Cornet is only just barely not cylindrical and is really just slightly sweeter than trumpet, while flugel is so dramatically conical that the design involves moving the valve cluster way up so that the bell can take up the majority of the instrument, and is more akin to a euphonium. That's what's responsible for the ...


4

Another key reason for tonal variation between the two is the mouthpiece design. Although a typical true cornet mouthpiece is generally deeper and more funnel shaped than a modern trumpet mouthpiece, it is less so than a typical flugel piece. Other factors include bell size, the way the bell flares earlier and faster on a flugel than a cornet, the way the ...


4

Most wind instruments are fine-tuneable. They need to be so when they play with others, they can all play at the exact same pitch. Sounds like this flugel is a little off, and needs the fundamental B♭ adjusting. At least then it's not playing 'in the cracks'. There's also the probability that the player isn't playing some notes exactly in tune, even ...


2

It is possible but unlikely that your girlfriend's flugelhorn is a very old one in Bflat but at A456. These were standard in British brass bands in the 1960s but most bands had converted to low pitch (A440) by the mid 1970s. But this does not explain your tuner reading. It should read around 1.5 semitones flat for an A456 instrument.


2

You are correct that the flugelhorn is in the key of Bb. So it should actually sound TWO semitones lower than your bass. Instruments like this are called "transposing" instruments. Trumpet, tenor saxophone, clarinet, and soprano saxophone are also in the key of Bb. Bass, guitar, piano, flute, and most other brass instruments are in the key of C (which is ...


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