In examining the group of musicians on this sculpture the reader will probably recognise several instruments in their hands which are identical with those already described in the preceding pages. The _organistrum_, played by two persons, is placed in the centre of the group, perhaps owing to its being the largest of the instruments rather than that it was distinguished by any superiority in sound or musical effect. Besides the small harp seen in the hands of the eighth and nineteenth musicians (in form nearly identical with the Anglo-Saxon harp) we find a small triangular harp, without a front-pillar, held on the lap by the fifth and eighteenth musicians. The _salterio_ on the lap of the tenth and seventeenth musicians resembles the dulcimer, but seems to be played with the fingers instead of with hammers. The most interesting instrument in this orchestra is the _vihuela_, or Spanish viol, of the twelfth century. The first, second, third, sixth, seventh, ninth, twentieth, twenty-second, twenty-third, and twenty-fourth musicians are depicted with a _vihuela_ which bears a close resemblance to the _rebec_. The instrument is represented with three strings, although in one or two instances five tuning-pegs are indicated. A large species of _vihuela_ is given to the eleventh, fourteenth, fifteenth, and sixteenth musicians. This instrument differs from the _rebec_ in so far as its body is broader and has incurvations at the sides. Also the sound-holes are different in form and position. The bow does not occur with any of these viols. But, as will be observed, the musicians are not represented in the act of playing; they are tuning and preparing for the performance, and the second of them is adjusting the bridge of his instrument.