82 THE ROLLER CANARY 
is to say, if the song is too fast, the ground tone is at 
times smothered, so that the effect is clattering, splutter- 
ing, shallow. If, on the other hand, the ground tone 
has the predominance, the effect is very charming, 
especially if it be a pure, deep, full hollow. This we 
call Hollow Gluck. This variety is also called simple 
(plain) Gluck. 
Bell Gluck, as the name implies, is higher up the 
scale, and has for ground tone ti with an i accompany- 
ing, thus—gliii-glii-gliii, which gives it a double effect. 
In double Gluck there is no “i,’’ as in Bell Gluck. 
Immediately after the deep accentuated Gluck sound one 
hears, as it were, a faint echo of Gluck an octave or a 
fifth higher. 
THE PLEASING WATER GLUCK 
Another pleasing variety is Water Gluck. It is 
somewhat similar to the sound caused by a little drop 
of water falling into water, and the after-drip of the 
rebounding drop. In a true sense it is also a double 
Gluck, because you get the deep u-sound with “i,” on 
the after beat. 
The consonants bl and gl must be soft (bluik-bluik, 
gloik-gloik). It differs therefore from Hollow Gluck by 
its double character and its water effect. When weak 
and faulty it sounds on a and 4, and the consonants 
are hard. 
By reason of their own peculiar construction, of their 
extensive variations, and consequent changes in tone 
effect, the Gluck tours form an important group in the 
treasure house of the Song Canary. In former years 
they were cultivated very largely, and with great success, 
