Set of 2 books. Plans for the summer + Cherry pit

Set of 2 books: "Cherry pit" and "Plans for the summer" by Asya Lavrinovich.   Plans for the summer. The end of the school year has been difficult for Katya Kanaeva.  Her best friend is hiding something, her parents are simply avoiding... her, and a three in physics threatens to ruin her vacation.  She has to study hard to improve her grades and possibly go to another country for the summer.  Completely unexpectedly, Katya auditions for the school choir to be closer to the soloist David Perov.  He is the star of the school and a heartthrob. All the high school girls are in love with his divine voice, and Katya is no exception.  She dreams of singing a duet with him. But how to do it if she has never performed on stage?   Cherry pit. The rustle of waves, hot sand, gentle breeze, shimmering starry sky.  In such a romantic setting, it's hard not to fall in love. Kostya goes on a business trip to a small resort town.  The monotonous workdays suited him perfectly until he met a beautiful stranger.  Kostya had no problems with the opposite sex before, but this time everything is quite complicated.  To win the girl's heart, he asks for help from his new friend. But this "friend" turns out to be a tomboy named Zhenya.  How will these unusual vacations end?