Review of The Best of Sparklabs Session 3 Startups, from beSUCCESS Writer Christine Bernard 1Day1Song is a Korean music discovery app. For a full day, the app will play a song from its artist of the day and will then display an exclusive background information provided by the performer. They have already launched on iOS with 64,000 users, and will launch on Android this summer. The app will also be launched in…