The appreciation of music can be enhanced by visualizing the sounds you're hearing, unless those sounds are coming from anywhere near the face of Nickelback's Chad Kroeger. For an online time-waster that's music to your eyes, visit the Isle of Tune.
Just launched by a Brit developer, Tune lets you make sweet grooves via a music sequencer designed to look like a Sim City town-planning interface, allowing you to build streets that then become songs, though not by lining them with "bars", because the Pogues made exactly the number of albums they should have. How it works: you're deeded a virtual "island", on which to lay down roads capable of handling up to three cars; sounds are created as vehicles pass objects you've placed, like trees (synth chords), lamp posts (drumbeats), and houses, which create more or less random noises, totally apropos for house music. Clicking on these items lets you change up certain sonic elements, allowing you to clone, set the volume and tone (within an octave), and put on a delay, a recording technique utilized most impressively by Axl Rose.
Once finished with your masterpiece, submit it for user approval; the top 50 are made available for public listening, with current favourites including several versions of "Beat It" and a rendition of Massive Attack's "Teardrop" -- or, what happens when you try to beat it, and your fantasy turns around to reveal that she's Chad Kroeger.