I Have But One Heart ('O Marenariello) - Remastered by Dean Martin runs at 87 BPM in the key of B Major. That Camelot code of 1B makes it easy to find tracks that blend seamlessly with it. Scroll down for the full chord palette, scale breakdown, and raga mapping for this key.
Scale & Notes of B Major
The B Major scale is built from these seven notes:
BC#D#EF#G#A#
Its relative key is G# Minor (same notes), and its parallel key is B Minor. If you're transposing or looking for a vocal-comfortable key, those are the natural neighbours.
Chords in B Major
The seven diatonic triads in this key — the chord palette most of the song will draw from:
| Degree | Chord | Quality |
|---|
| I | B | Major |
| ii | C#m | Minor |
| iii | D#m | Minor |
| IV | E | Major |
| V | F# | Major |
| vi | G#m | Minor |
| vii° | A#dim | Diminished |
Indian Classical: the Marwa thaat
In Hindustani classical terms, B Major maps to the Marwa thaat (Western mode: Lydian ♭2 (Marwa mode)). Unique to Indian music — the 'Marwa mode.' A ♭2 and raised 4th (♯4) with no perfect 5th in the characteristic phrases. Creates intense tension and yearning. Has no exact Western parallel; closest to a Lydian scale with flat second (Neapolitan Lydian). Traditional listening time: Sunset (5–7 pm).
If you want to sing or practise in this key, set your tonic (Sa) to B. Ragas built on this thaat:
- Marwa — Lydian ♭2 — ♭2 and ♯4, avoids Pa (5th) — extreme tension. Intense yearning, sunset dread.
- Puriya — Lydian ♭2 with strong ♭2 emphasis — similar to Marwa but sweeter. Romantic longing, twilight.
- Sohini — Lydian ♭2 pentatonic (omits 2nd and 6th). Restless, passionate (Night).
- Lalit — Marwa scale with both ♮4 and ♯4 (double madhyam). Deep meditation, dawn (Pre-dawn).
Set Tanpura to B →Practise in this key →Find another song's key →
Harmonic mixing (for DJs)
I Have But One Heart ('O Marenariello) - Remastered sits at Camelot 1B. For a smooth harmonic transition, mix it with tracks in 12B, 1A, 2B — adjacent keys on the Camelot wheel that share most of their notes.