Behind SONA are two of the country's leading vocal coaches; Sophie Ziedoy & Nana Fagerberg. With the SONA app, you have the opportunity to take SONA's exercises with you in your pocket when you go on tour, in the studio, give lectures, etc. You get access to the best exercises, as well as a lot of SONA's best tips, tricks and good advice to take care of your voice - both before, during and after.