Yes, you can listen to more than 1 topic per day because your brain has amazing learning capacity. In case you want to listen to different audio tracks with brainwave entrainment (binaural beats or isochronic tones) consecutively, just check if the topics are related: if yes, then it is fine; otherwise if the topics are different, just allow your brain time to return to its normal conscious state before beginning a new session. And if you wonder in which order you should listen to your different audio tracks, just experiment, trust yourself and see what works best for you. However, for example if you are close to go to sleep and you want to listen to a program including Alpha waves and one with Delta waves, just listen to the Alpha first and then Delta of course. Please read the descriptions of each brain state to determine what kind of mental energy you desire and at what time of the day. For audios with brainwave entrainment, remember to always limit your listening to 60 minutes per day (except for sleep and healing programs – see FAQ 16).