I played them over and over, remembering them slowly, <em>and then this and then that</em> as if letting a sweet lozenge dissolve under my tongue.
Explanation:
this shows the narrator treasures the memories of their mother because they replay the memories many times as if they are valuable to the narrator, who compares the memories to having a sweet lozenge dissolve in their mouth. A sweet lozenge is a candy meant for enjoying, it represents positivity and good times.
