Madonna is referred to as the Queen of Pop because of her immense influence and impact on the music industry. She has consistently pushed boundaries with her music, style, and performances, setting trends and paving the way for future pop artists. Madonna's ability to reinvent herself and stay relevant over several decades has solidified her status as a pop music icon. Her chart-topping hits, record-breaking tours, and cultural significance have earned her the title of the Queen of Pop. **

Herman van Veen is a singer-songwriter. He is known for his folk and pop music, as well as his skills as a songwriter. While he has incorporated elements of various genres into his music, his style is primarily characterized by his thoughtful lyrics and melodic compositions. **

Classical music without singing is often referred to as instrumental music. This type of music focuses on the use of instruments to convey emotions, tell stories, and create beautiful melodies without the use of vocals. Instrumental classical music can range from solo piano pieces to symphonies performed by a full orchestra. **

Male K-Pop idols are often referred to as girls due to their androgynous appearance and fashion choices. In the K-Pop industry, there is a strong emphasis on beauty and aesthetics, leading male idols to experiment with makeup, hairstyles, and clothing traditionally associated with femininity. This blurring of gender norms has become a common and accepted part of K-Pop culture, with fans appreciating idols for their unique and diverse expressions of identity. Ultimately, referring to male idols as girls is a way to celebrate their individuality and challenge traditional gender stereotypes. **

Britney Spears is often referred to as an icon of the 90s because she rose to fame during that decade and became one of the most influential pop stars of the era. Her music, fashion, and overall image had a significant impact on popular culture in the 90s, and she was a symbol of the teen pop phenomenon that dominated the music industry at the time. Additionally, her debut album "...Baby One More Time" was released in 1999 and became a massive commercial success, solidifying her status as a 90s icon. **

The type of music being referred to is program music. Program music is instrumental music that is associated with a story, poem, idea, or scene, often through the use of descriptive titles or accompanying text. This type of music aims to evoke specific imagery or emotions in the listener by following a narrative or program. **

Herman van Veen is a versatile artist who is best known as a singer-songwriter. He is known for his poetic and introspective songwriting, and his music spans various genres including pop, folk, and cabaret. While he has achieved commercial success with some of his pop songs, he is not typically categorized as a pop artist or a schlager singer. **

Calm techno music is a subgenre of electronic music that combines the rhythmic and synthetic elements of techno with a more relaxed and soothing atmosphere. It often features slower tempos, minimalistic beats, and ambient textures, creating a tranquil and meditative listening experience. This style is often associated with artists who focus on creating a more introspective and serene sound within the techno genre. **