Because they are part of the 3 Abrahamic religions, which worship God, except they call him Allah.
Some churches that do not practice communion as part of their worship services include the Salvation Army, Quakers, and some Baptist and Pentecostal denominations.
If you are familiar with any other religion, you will know that it is an almost universal requirement of religions to worship their God or gods.
The Psalms are part of the Bible; therefore, many people consider them to be Holy Scripture.
A responsorial psalm is a psalm or chant recited in parts with a congregational response between each part.
The Pentecostal/ Apostolic Charismatic movement often features speaking in tongues as part of their services.
If you mean listen to music, as opposed to the service, yes. Whether music is supposed to be part of a church service is a subjective opinion, but traditionally it has been included (either as music or singing) in most Christian religions.
Most religions worship a god of some sort (except for Buddhism and Taoism) Many worship many gods (Hindus, Wiccans, native religions) Some religions have a God and a Jesus (Moslems and Rasifarians) but don't rate the Jesus part so highly. Pastafarians the Church of the Subgenius are sort of to the left of this whole issue Mormons have a different veiw of God and Jesus than most mainline Christian churches
Satan is not worshiped in any Pagan religions. The only known religions in which Satan is a part are Satanism and Christianity (and its offshoots- Catholicism, Judaism, etc.). Please be very aware of this fact: Wiccans do not worship the devil, nor do Wiccans even believe in the devil.
Ancestor worship is central to primal religions because ancestors are believed to have a connection with the living, providing guidance, protection, and blessings. Primal religions often emphasize the continuity between the living and the dead, viewing ancestors as guardians of traditions and cultural values. By honoring and respecting ancestors through rituals and offerings, primal believers seek harmony and balance in their lives.
Old Testement
Songs have been a part of Christian worship since its very beginning as a Jewish sect.