There's a pretty sad element lurking in the background here, in that after µ's disbanded, Maki ended up reverting to the way she was beforehand, playing the piano as a refuge from the stresses of living the life her parents laid out for her, and feeling empty without "those girls". It's treated as a bright, wonderful thing that she feels she can't ever match again, which doesn't bode well for her future life. At least Riko gives her momentary respite from that.
The way LL is set up, Maki really catches it in the neck no matter which way she goes. She either leaves her passion for music behind, the thing she really loves the most, and consigns it to hobby at best while playing the good little heiress. Or else she defies them to stick with her real dream and faces a rift with the parents that, in the anime at least, she loves and relies on so much. Neither are really good options.
