My answer on VU Meters, do it WannaDuino STYLE, on Steroids.
15,- USD TOTAL.
Wireless 1 double 10.000mAh powerbank. Check the Links below,
I used 8 8LEDS already done PCB`s and soldered it together.
All the links and CODE are in this description, 
ANYBODY can build this. Arduino Nano power, an IR sensor, and Transmitter a Mic sensor.

WS2812 LED strips, https://www.banggood.com/CJMCU-8-Bit-...
Arduino Nano, https://www.banggood.com/ATmega328P-A...
Arduino Nano and expansionboard, https://www.banggood.com/Funduino-Nan...
IR Sensor, https://www.banggood.com/3Pcs-KY-022-...
Mic Audio Sensor, https://www.banggood.com/CJMCU-9812-M...
And for a transmitter, you can use your TV one. or use a momentary Switch if you don`t want it wireless. Or do both.
The IR can toggle over sometimes.
https://www.banggood.com/?p=NI0316203...
For some BARGAINS check BangGood, al my gear comes from them.
CODE, https://drive.google.com/open?id=1ow9...