{"status": "success", "json_a": {"prompt": "Genre: Mandopop / Ballad; BPM: 155; Key: G Major; Rhythm: Slow 4/4 ballad groove. Acoustic guitar arpeggios drive the 16th-note feel. Drums play a sparse backbeat on 2 & 4.; Instruments: Acoustic Guitar (steel-string, intricate arpeggios); Piano (soft, supportive chords); Bass (clean, round); Drums (natural kit, simple backbeat); Strings (warm pads).; Vocals: Male tenor, clear and breathy. Sincere delivery with a mix of gentle chest voice and controlled falsetto. Light reverb and compression.; Mood: Looking at a faded photograph in a quiet attic, the scent of old paper and dust in the air.; Production: High-fidelity, radio-ready polish. Vocals are upfront and centered in a wide stereo field. Lush reverb creates an intimate space.; Language: Mandarin; Highlight: The downbeat of the first chorus, as the vocal melody leaps upward into an emotionally raw timbre while a warm string pad swells underneath for the first time.", "lyrics": "[intro]\n(Chords: G - D/F# - Em7 - Cmaj7)\n(Inst: Intricate fingerpicked acoustic guitar motif establishes the main theme.)\n(Mix: Centered, dry, intimate.)\n(Hook-DNA: The arpeggiated G-D/F#-Em7-Cmaj7 progression carries the song's core emotion.)\n\n[verse]\n(Chords: Cmaj7 - G/B - Am7 - Dsus4 - D)\n(Vocal-Perf: Soft, breathy, conversational mezzo-piano.)\n(Inst: Solo acoustic guitar provides the only accompaniment, creating a sparse, personal atmosphere.)\n(Mix: Vocals are upfront, very little reverb, feels close to the listener.)\n(Transition: A single, sustained piano chord swells gently into the chorus.)\n心很空 天很大 云很重\n我恨孤单 却赶不走\n签着她的名字 她的喜怒哀乐\n往前走 多久了\n\n[chorus]\n(Chords: G - D/F# - Em7 - Cmaj7)\n(Vocal-Perf: Dynamic lift to mezzo-forte, more sustained notes, emotional strain on the upper register.)\n(Inst: Bass, simple drums with brushes, and soft string pads enter, adding warmth and width.)\n(Mix: Stereo field widens significantly. Vocal reverb increases, creating a sense of space and reflection.)\n(Sound-Design: The entrance of the full band on the downbeat provides the song's primary emotional release.)\n那女孩对我说 说我保护她的梦\n说这个世界 对她这样的不多\n她渐渐忘了我 但是她并不晓得\n遍体鳞伤的我 一天也没再爱过\n\n[verse]\n(Chords: Cmaj7 - G/B - Am7 - Dsus4 - D)\n(Vocal-Perf: Returns to a softer dynamic, but with more weight and sorrow than the first verse.)\n(Inst: The full band continues, but the drums simplify to a basic kick-snare pattern, letting the vocal breathe.)\n(Mix: Instruments pull back slightly to refocus attention on the lyrics.)\n(Transition: Drum fill and string swell build energy directly into the next chorus.)\n一个人心中只有一个宝贝\n久了之后 她变成了眼泪\n泪一滴在左手 凝固成为寂寞\n往回看 有什么\n\n[chorus]\n(Chords: G - D/F# - Em7 - Cmaj7)\n(Vocal-Perf: Most powerful and impassioned delivery; full chest voice with a noticeable emotional crack.)\n(Inst: Strings are more prominent, drums are stronger with cymbal crashes on accents. A subtle backing vocal harmony enters.)\n(Mix: The widest and fullest point of the song. Vocals are layered and sit comfortably within the lush arrangement.)\n那女孩对我说 说我是一个小偷\n偷她的回忆 塞进我的脑海中\n我不需要自由 只想背着她的梦\n一步步向前走 她给的永远 不重\n\n[outro]\n(Chords: G - D/F# - Em7 - Cmaj7)\n(Inst: All instruments fade out except for the solo acoustic guitar, which repeats the intro motif.)\n(Vocal-Perf: A final, quiet, breathy ad-lib might be whispered over the guitar.)\n(Mix: A long reverb tail on the final guitar chord fades slowly to silence.)\n(Structure: Gradual decrescendo and instrumental fade.)"}, "time": 38.0, "attempt": 1, "prompt_ok": true, "lyrics_ok": true, "api": "official", "provider": "google", "model": "gemini-2.5-pro", "usage": {"prompt_tokens": 11427, "completion_tokens": 1044, "total_tokens": 15826}}