color image, colored, colors, colour, colours, companionship, comrade, comrades, conductor, courses, day, daylight, daytime, dry run, education, expertise, friend, friendliness, friendship, friendships, full body, full length, full-length, fun, furnishing, furnishings, furniture, game, high school, high school student, high school students, high-school, high-schools, highschool, highschools, horizontal, horizontally, horizontals, human, human being, humans, incidental people, indoor, indoors, inside, instrument, juvenile, juveniles, kids, know-how, knowledge, learn, learning, minor, minors, music, music class, music school, musical instrument, musical instruments, pal, pals, people, person, photographic, photography, play, played, playing, plucking an instrument, practice, practiced, practices, practicing, practise, practised, practises, practising, pupil, pupils, recreation, rehearsal, rehearsals, rehearse, rehearsed, rehearses, rehearsing, school, schoolroom, schoolrooms, schools, seated, seating, sit, sits, sitting, skill, skilled, skills, string instrument, student, students, study group, technique, teen, teenage, teenage boy, teenage boys, teenager, teenagers, teens, training, two, two people, twos, vocational school, young, youngster, youngsters, youth, youthful, youthfulness, youths, education training class, europe, scandinavia, sweden, vocational education