Yes, Leon Trotsky was a Bolshevik. He was a key figure in the Russian Revolution of 1917 and played a significant role in the Bolshevik Party, serving as the People's Commissar for Foreign Affairs and later as the People's Commissar for War. Trotsky was a close ally of Vladimir Lenin and a leading figure in the early Soviet government. However, he later fell out of favor with Joseph Stalin and was eventually expelled from the Communist Party and exiled from the Soviet Union. **

The Stuka squadron was not actually attacking Bolshevik troop concentrations. The squadron was part of a propaganda effort by the German military to create the impression that they were actively engaging in combat against the Bolsheviks. In reality, the Stukas were not carrying out any real attacks and were instead used for photo opportunities and propaganda purposes. This deception was meant to bolster morale and create the appearance of military success. **

The Stuka unit was not necessarily attacking actual Bolshevik troop concentrations. The term "Bolshevik troop concentrations" may have been used as a propaganda tool to justify the attacks. In reality, the Stuka unit may have been targeting a variety of military and civilian targets, including infrastructure, supply lines, and communication centers, rather than specifically concentrating on Bolshevik troops. The use of propaganda and misinformation was common during wartime to shape public perception and justify military actions. **

Bolshevik Russia under Lenin can be considered a progress compared to Tsarism in some aspects. Under Lenin, there were significant social and economic reforms, such as the redistribution of land to the peasants and the nationalization of industry. The Bolsheviks also implemented policies to improve literacy rates and healthcare, and they granted more rights to women. However, the regime was also marked by political repression, censorship, and the suppression of opposition, which can be seen as a regression compared to the limited reforms and autocratic rule of Tsarism. Overall, the comparison is complex and depends on the specific criteria used to evaluate progress. **

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. **