Small video of light organ i made recently

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here's small video of light organ i made recently. This version has low pass filter around <100hz frequency. Filtering and required amplification is made by lm358 dual op amp, but only other half was needed for mono-operation Amplification is made possible if necessary if it starts clipping. The led driving is accomplished by paralled bc548 NPN small signal transistors, along their base diodes/resistors. I have no idea about power consumption of this device, but i can imagine it being pretty small...Sorry about bad audio quality, and perhaps poor song for this purpose, as it lacks bass needed. As always, discussion welcome!

transistors aren't excatly paralled thought, only their emitters are tied together, their base current is different