I used Echo recording app for adding echo effect which is not possible on Dolby. I exported the recorded file to Dolby for editing & adding other audio effects. This worked the best for me with a studio level performamce for a beginner like me. After Dolby's update in Dec, suddenly it is not working at all. The aduio + music track captured by Dolby from ECHO is barely audible. Dont know how to correct it. I tried on different phones, deleted & reinstalled, but to no avail. Pls. Help Dolby team.