K: Emin T: 90 BPM TS: 4/4 INST: INST:DistortedGuitars, INST:HeavyBass, INST:Drums, INST:PipeOrgan, INST:GrowledVocals Mood: Dark, Ominous, Heavy, Ritualistic, Malevolent Structure: Intro - Verse 1 - Chorus - Verse 2 - Chorus - Bridge (Instrumental/Solo) - Chorus - Outro Summary: The "Satan song" description immediately evokes a dark and heavy atmosphere, characteristic of various subgenres of metal, particularly doom metal, black metal, or classic heavy metal with occult themes (e.g., early Black Sabbath, King Diamond). An **E minor (Emin)** key is chosen as it's a common and effective key for conveying darkness and gravitas in rock and metal. A tempo of **90 BPM** suggests a deliberate, heavy, and potentially crushing pace—not frantically fast like some extreme metal, but weighty enough to feel imposing, allowing for heavy grooves. The **4/4 time signature** is standard for most rock and metal, providing a solid, driving rhythmic foundation. The instrumentation would likely feature heavily **DistortedGuitars** playing low, powerful riffs, possibly incorporating dissonant intervals or tritone-based melodies. A **HeavyBass** would underpin this, providing a thick low-end. **Drums** would be powerful and impactful, likely with a prominent kick and snare, possibly employing slower, more thunderous patterns or mid-tempo rock beats. The inclusion of a **PipeOrgan** would significantly enhance the "Satanic" or ritualistic atmosphere, lending a gothic, ecclesiastical, yet demonic feel. **GrowledVocals** or deeply resonant, menacing clean vocals would fit the thematic content. The mood is undeniably **Dark, Ominous, Heavy, and Ritualistic**, with a strong sense of **Malevolence**. The suggested **Intro - Verse - Chorus - Verse - Chorus - Bridge (Instrumental/Solo) - Chorus - Outro** structure is a common and effective framework in metal, allowing for thematic development, memorable choruses, and an instrumental section for a guitar solo or atmospheric build-up that suits the evil theme. The outro might fade out with feedback, a repeating organ motif, or a slowing, crushing riff.

Model: gemini-2.5-pro-exp-03-25