[ George Houghton wrote in 100810 MMDigest:
> Can anyone identify what instrument these music loops were for:
> http://www.fops.org/forum/viewtopic.php?f=7&p=585#p585 

The photos show music bands for the Celestina or English Seraphone.
Most of these types of organette play loops in addition to the more
usual rolls.  A special spool was fitted in place of the conventional
roll and the endless loop was threaded across the tracker bar and
'round the drive spool at the back.  This arrangement was ideal for
hymns and songs where verses are repeated.

Nicholas Simons