When using the Sonos App to stream Amazon Music, the Artists listing in My Music is incomplete. I can only access artists up to the letter P. The list beyond that point is truncated. I had read a previous thread here indicating that Amazon Music applies a container size limit of 500 items. This seems to imply that the truncation of my list is a condition imposed by Amazon. I take issue with this answer, since my Bose app contains the complete Amazon Music artist listing, and continues to readily follow my expansion of that list with no issues when I add new artists. Why not the Sonos app, as well? The previously suggested workaround of using the Amazon Music search function in the Sonos app is cumbersome and time consuming. It is far easier to scan through my private list to select files to play than to perform a search from memory. Why even use a selection list, if only half of my artist selections are readily available, and the other half I must recall from memory and then use a search function to select and play them? From a user perspective this is a considerable functional shortcoming.