Minor 2nd vs Major 2nd
The Half Step vs Whole Step
A minor second (m2) is a distance of one half-step (e.g., C to C#). It is the smallest interval on a piano or guitar.
A major second (M2) is a distance of two half-steps, or one whole step (e.g., C to D).
How do they sound?
The minor second is incredibly dissonant and tense. Played harmonically, it sounds like the notes are clashing violently. Played melodically, it is the famous "Jaws" theme.
The major second is also dissonant, but much softer. It sounds like the opening two notes of "Happy Birthday".
Practice tips
Because these intervals are so close in size, beginners often confuse them. Set your trainer to ONLY these two intervals, and play them in Harmonic mode. The sheer crunch and extreme tension of the minor 2nd will quickly become obvious compared to the milder major 2nd.
Ready to practice?
BananaTone is a free, fast ear training app. No sign-up required — just open and start practicing.