Here, the lines can be seen in the guitar strings.
Nice guitar! You've got the strings as lines and a grid almost with the frets on the neck.
I like the lighting you have going on here! The reflection of the window adds more lines and make it a cool picture!
The most prominent lines are the strings on the guitar. I also enjoy the angle of the guitar you decided to use, rather than taking a picture of it straight on.
The strings represent the concept very well.
This is a really good picture showing lines in a creative way! really nice reflection of the window bringing in more lines! very simple but also complex! I love it!