Raag Malkauns: Sing the song, Mai Gulam, from Lesson 13 and listen to its on-stage rendition as well. Caution: In the on-stage rendition of the song, the lower S starts on the 5th black key (a half-note higher than what we learn in the class) from the left on the virtual keyboard.
Last but not the least, remember that attending the class regularly is very important. A lot more techniques may be taught in the "live" class that may not be all mentioned here on the web. Enjoy singing!