IFR (Instrument Flight Rules) and VFR (Visual Flight Rules) are two different sets of rules that pilots use when flying. VFR is used when the weather conditions are clear, allowing the pilot to navigate and control the aircraft by visual reference to the ground and other landmarks. IFR is used when the weather conditions are poor, requiring the pilot to rely on the aircraft's instruments for navigation and control. In essence, VFR is used in clear weather conditions, while IFR is used in poor weather conditions. **

In Flight Simulator 2020, you may not be able to start an IFR (Instrument Flight Rules) flight for a few reasons. One possible reason is that your aircraft may not be equipped with the necessary avionics and instruments to fly under IFR conditions. Another reason could be that the departure airport or the weather conditions may not be suitable for IFR flight. Additionally, you may need to set up your flight plan and communicate with air traffic control to fly IFR, and if these elements are not properly configured, you may not be able to start an IFR flight. **

Yes, it is allowed to change the route during an IFR (Instrument Flight Rules) flight. Pilots can request route changes from air traffic control (ATC) for various reasons such as weather avoidance, traffic separation, or to optimize the flight path. ATC will then provide the necessary clearances and instructions to the pilot to ensure a safe and efficient route change. It is important for pilots to communicate with ATC and follow their instructions when making route changes to maintain the safety and integrity of the airspace system. **

Yes, airplanes can fly under Instrument Flight Rules (IFR) without having an Instrument Landing System (ILS) on board. ILS is just one of the many navigation aids available for IFR flights, and there are other systems and procedures that can be used for navigation and approach in low visibility conditions. These include GPS, VOR, NDB, and RNAV approaches, as well as other non-precision approaches. Pilots can also use radar vectors from air traffic control to guide them to the runway without relying on ILS. **

Organ music refers to music that is specifically composed for or performed on the organ, a large keyboard instrument that produces sound by driving pressurized air through pipes. Organ music can range from classical compositions to contemporary pieces, and the instrument is often associated with church music due to its historical use in religious settings. Organ music can be performed solo or as part of a larger ensemble, and it is known for its rich, powerful sound and ability to create a wide range of musical textures. **

The piano is considered a keyboard instrument. While it does have strings inside that produce sound when struck by hammers, the primary way of playing the piano is by pressing keys on the keyboard. The keys are connected to the hammers that strike the strings, making it a unique hybrid instrument that combines elements of both string and keyboard instruments. **

Fans of 60s and 70s music with keyboard or organ sounds may include music enthusiasts, collectors of vinyl records, and musicians who specialize in that era. Additionally, DJs who specialize in retro music and radio stations that play classic rock and oldies are likely to have a good knowledge of music from that time period. Furthermore, music historians and scholars who study the evolution of popular music may also have a deep understanding of the keyboard and organ-driven music of the 60s and 70s. **

I'd be happy to help you with the church organ. I have experience playing the organ and can assist with selecting appropriate music, providing accompaniment for hymns, and offering guidance on how to use the instrument effectively during church services. Let me know what specific assistance you need, and I'll do my best to support you. **