Blues music turns sorrow into song, so it is traditionally read as sadness being acknowledged and shared. It points to feelings you may need to express rather than hide.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.