Fun little Shoot 'Em Up that uses your own music to generate the waves of incoming enemies. You only have a small play zone to maneuver, with enemies coming in from the sides & top of your screen making for some intense close combat game play. The responsivness of your ship with the mouse is great giving you minute control over your position & graphically the enemies & weapons fire is easy to distinguish even when there is a lot going on, on-screen.
Each song completed will grant you a random weapons upgrade drop, with a chance of a rare drop. These can be purchased (& upgraded) to increase your firepower of the four weapons slots on your ship & you can even change the angle of fire for each slot to customise your layout further which is cool. This is needed as you progress up the difficulty levels & to kill the random bosses needed to complete the story mode. Scoring is combo based, so the more you can kill in sequence (with less enemies escaping), will grant higher scores but stay nimble as each death will cost you a score penalty. Each kill also drops a bonus '♫' to pickup, granting health, power-ups & score increases so you need to be quick & get them all before they disappear for the best scores.
I found all but the top two difficulty levels relatively easy; each difficulty level unlocks after killing three bosses. This can take some time making the start of the game feel rather dull to grind out the first few bosses, but if you stick with it, it becomes far more enjoyable later. For me, I just got a little tipsy off a few ciders, cranked up the volume & enjoyed some of my favorite tracks which certainly helped make the initial grind pass by much quicker :p .
Although your music generates the enemies, you don't really get a sense of any pattern to the beat which would have been nice. For example, sometimes it goes into 'hardcore mode' in parts of songs you wouldn't expect & this seems to increase in frequency the higher the difficulty you go. It's not a big issue though, as you do get the feeling of randomness in the waves so each run feels different.
Regardless of the few shortcomings, if you love your music & your shoot 'em ups it is very easy to waste away a few hours in ♪ Symphony ♪ liberating your music!