Tie vs. slur: what's the difference?
They look like the exact same curved line — and that trips up almost every beginner. The good news: there's one quick test that tells them apart every single time, and once you know it you'll never confuse them again.
A tie and a slur are both drawn as a small curved line that arcs over (or under) a group of notes. But they ask you to do two completely different things. Learning to spot which is which is one of those small reading skills that instantly makes you look like you know what you're doing.
Learn it by playing
Rhythm reading sticks far faster when you do it. Our free arcade drills note values and rhythm symbols in quick rounds — keep this guide open and jump in whenever.
The one-second test
Here's the whole trick. Look at the two noteheads the curve connects:
- Are they the same pitch (the same line or space)? It's a tie.
- Are they different pitches? It's a slur.
That's it. Same note = tie. Different notes = slur. Everything below is just the "why."
What a tie does
A tie joins two notes of the same pitch into one longer sound. You play the first note and hold it through the full combined length — you do not play the second note again.
For example, a quarter note tied to another quarter note in 4/4 time sounds exactly like a half note: one attack, held for two beats. So why not just write a half note? Two big reasons:
- To cross a bar line. A note can't be written as a single symbol when it needs to continue from one measure into the next. A tie lets you hold a sound across the bar line.
- To show the beat clearly. Inside a measure, ties help spell out where the beats fall so the rhythm is easy to read — clearer than one oddly-placed long note.
Think of a tie as arithmetic: it adds the two note values together to make one held note.
What a slur does
A slur connects two or more notes of different pitches and tells you to play them legato — smoothly, with no gap or break between them. You do play every note under a slur (they're different pitches, after all); you just connect them seamlessly.
How you actually produce that smoothness depends on your instrument:
- Brass and woodwinds: play the slurred notes in one breath, with only the first note tongued. The notes that follow change pitch without a new tongue stroke.
- Strings: a slur usually means play all those notes in one bow (one bow direction).
- Voice: a slur often shows several notes sung on a single syllable.
- Piano: connect the notes so each flows into the next with no audible gap.
A side-by-side example
Imagine two written figures:
- C — C joined by a curve. Same pitch, so it's a tie: one C, held for the full length of both.
- C — D — E joined by a curve. Different pitches, so it's a slur: play all three, smoothly connected, with one tongue or one bow.
Same curved line on the page; opposite instructions. The pitches are your tell.
Common mix-ups to avoid
- Re-attacking a tied note. The most common beginner slip. Remember: a tie is one sound, held — not two notes played.
- Tonguing every note under a slur. On wind and brass, only the first slurred note is tongued. The rest connect without re-articulating.
- Confusing a slur with a phrase mark. A long curve over many measures is usually a phrase mark — a musical "sentence." Treat it as a guide to shaping the line, not a strict note-by-note instruction.
How to make it automatic
Reading these correctly at speed is a recognition skill, and recognition gets fast with reps. The trick is to drill the underlying symbols — note values, beats, and how lengths add up — until the math behind a tie is instant. The faster you read rhythm symbols, the less you'll have to stop and think about whether a curve is a tie or a slur.
Rhythm Match
Match each rhythm symbol to its name — whole, half, quarter, dotted notes, eighths, sixteenths, and rests — so the values behind every tie become second nature.
Frequently asked questions
How do I tell a tie from a slur?
Look at the two noteheads the curve connects. If they are the same pitch, it's a tie — hold the note through both. If they are different pitches, it's a slur — play them smoothly and connected.
Do you play both notes under a tie?
No. A tie joins two notes of the same pitch into one longer sound. You play the first note and hold it for the combined value; you don't re-articulate the second note.
What does a slur tell you to do?
A slur tells you to play the notes legato — smoothly connected, with no gap between them. On wind and brass you slur with one breath and no new tongue stroke; on strings it usually means one bow.
Keep learning: Note values & rests · Read the treble clef · all guides · more articles