The Toroa (named after the Southern Royal Albatross) is a handcrafted tuneable low penny whistle in the key of B major. The tuning slide is for fine tuning and allows the pitch to be shifted about 30 cents each way.
This is a big whistle and is not recommended for beginners. The Toroa features carefully offset tone holes to simplify fingering. With these offsets and use of the 'pipers grip' the Toroa is easier to play than you may think, but may still be a challenge for some. NB, the offsets are configured for the conventional hand position, left hand above right hand. If you play right hand above left, get in touch with me and I can arrange to manufacture a Toroa with opposite offsets.
These whistles are tough, made from PVC. They feature a small bell/horn which helps improve the volume of the lower notes of each octave compared to the higher ones. They also have a curved lip against which the air is directed like a classical flute, rather than a straight one, giving a distinctive tone. Each whistle is carefully hand tuned to concert pitch A=440Hz, within the limits of variable air temperature and how hard you blow.
The range of the Toroa is two octaves, B3 to A#5, and maybe a couple of notes higher although they are rather loud! Besides the key of B, the whistle is easily played in Dorian mode (the scale starting on C#), in E major and C# minor by half-holing the A# and of course G# minor. My whistle has a very comfortable mouthpiece shape compared to many PVC or aluminium whistles and all feature the Takahe emblem of my Takahe Flutes brand. A demo by Eamon Spillane of the very similar Kakapo Low-C whistle is on YouTube here: https://www.youtube.com/watch?v=8VTywPCNgrk&feature=youtu.be