Build a 6-string "cigar-box" electric guitar to demonstrate the following:
1. A circuit that can tune the guitar;
2. A circuit that suppresses the second- and higher-order harmonics of the unmodified G string by at least 60 dB
3. A circuit that provides an "effect" of your choice. Further instructions are deliberately vague. The LM2917 and the MAX274 integrated circuits may be helpful."