I took some time to write this review after purchasing the singing straw, because I wanted to see the results over a longer period of time. So it's been 3 months now and I have been using it about 4 times a week on average to do vocal exercises and I felt improvement immediately the first week, but now after 3 months others are starting to notice it as well, I got feedback like " your voice sounds a lot stronger" and " wow, your singing is sounding great" and that's only with 15 to 20 minutes warm up practices with the straw before I practice my songs. I am so happy I found this because I feel like I can do a lot more things with my voice now that I could not do before, my range has expanded and singing just feels easier in general. Also, my breathing has improved and I am never straining anymore. Thank you so much!