If you need to climb up levels fast in the game, you should do music lessons. I'm 3 lessons away from reaching Level 75 and it only took a couple of days. Could have climbed even more but I had to work at night so I couldn't play.
I'm having trouble loading images with Ecency at the moment. It happens from time to time. I'll probably reach level 75 today or tomorrow morning at the latest and then I will switch back to the new mission which is the Band Audition.
Player ranking has dropped to 464 but I suppose that is because I haven't bought any new cards in the last couple of days so that penalizes the switch to lessons and extra playing time. Ego is also at 0% now although a couple of standard missions will bring it back up since it is at the threshold.