Monday - Use closed tube effects to measure the speed of sound (and reinforce wavelengths, amplitudes, and certain kinds of instruments)
Tuesday - go take a test (or work on STUPH)
Wednesday - dude, like, it's totally tubular...
Thursday - that Doppler effect thingy
Phriday - get it done, phinish everything, work on your songs (and lyrics?)
and because it's cool:
beats: http://onlinetonegenerator.com/binauralbeats.html
noise cancelling headphones: http://www.cnet.com/topics/headphones/best-headphones/noise-canceling/
dial tones and more!: http://onlinetonegenerator.com/dtmf.html

and because it's cool:
beats: http://onlinetonegenerator.com/binauralbeats.html
noise cancelling headphones: http://www.cnet.com/topics/headphones/best-headphones/noise-canceling/
dial tones and more!: http://onlinetonegenerator.com/dtmf.html