At least one embodiment of this disclosure includes a method of sharing application states across different user profiles. The transducer also includes a first tightening mechanism for securing a ball bonding tool in the bonding tool aperture, and a second tightening mechanism for securing a wedge bonding tool in the bonding tool aperture. A first metal plate 23a and a second metal plate 23b are disposed from the outside on opposite support elements 9a and 9b, respectively. A duration time adjusting device adjusts time duration of the read-out voice fragment data so as to match a desired tempo and manner of singing. The bag holds over twenty balls for easy carriage and access.