These are Polyphonic Ringtones that will fit with no problem on your T720.  To listen, just click on them, and to download just right click and save-as!

01-Creed-OneLast Breath.mid

02-cum_baby.mid

03-Green Day-Hitchin a Ride.mid

04-layla.mid

05-Linkin Park-One Step Closer.mid

06-Metallica- Memory Remains.mid

07-Metallica-Master1.mid

08-Metallica-Master2.mid

09-Star Wars.mid

10-System of a down-Toxicity.mid

11-Transformers(remastered).mid

And here are an additional 43 30-50 second Ringtone Files for you to put on your T720...

43 30-50sec Tones.zip

If you have your own ringtones, and they happen to be the full song, which is a bit much!  Use Anvil Studios MIDI Software to cut out whatever peice of the MIDI you want to use as your ringtones, it is free, and easy to use!