Below you will find the circuit schematics and list of parts for this setup, and also a video showing step by step how to build the circuit on breadboard.
Components list:
1x BC547 Transistor Q1
1x 10KΩ Resistor R1
1x 2.2uF Capacitor C2
1x 100nF Capacitor C1
1x 1N4148 Diode D1
2x 6.3mm Mono AJ
Step by step video guide on how to build the circuit according to the schematic above: