diff --git a/main/common-types/src/duration_in_quarter_notes.rs b/main/common-types/src/duration_in_quarter_notes.rs
new file mode 100644
index 00000000..13d6c6ff
--- /dev/null
+++ b/main/common-types/src/duration_in_quarter_notes.rs
@@ -0,0 +1,36 @@
+use nutype::nutype;
+
+/// This represents a duration expressed as positive amount of quarter notes.
+#[nutype(
+    new_unchecked,
+    validate(finite, greater_or_equal = 0.0),
+    derive(
+        Copy,
+        Clone,
+        Eq,
+        PartialEq,
+        Ord,
+        PartialOrd,
+        Debug,
+        Default,
+        Display,
+        FromStr,
+        Into,
+        TryFrom,
+        Serialize,
+        Deserialize
+    ),
+    default = 0.0
+)]
+pub struct DurationInQuarterNotes(f64);
+
+impl DurationInQuarterNotes {
+    /// The minimum duration (zero, empty).
+    pub const ZERO: DurationInQuarterNotes = unsafe { DurationInQuarterNotes::new_unchecked(0.0) };
+
+    /// The maximum possible duration (highest possible floating-point number).
+    pub const MAX: DurationInQuarterNotes =
+        unsafe { DurationInQuarterNotes::new_unchecked(f64::MAX) };
+
+    nutype_additions!(f64);
+}
diff --git a/main/common-types/src/lib.rs b/main/common-types/src/lib.rs
index 73af4413..eda5f0bd 100644
--- a/main/common-types/src/lib.rs
+++ b/main/common-types/src/lib.rs
@@ -8,6 +8,7 @@ pub use hex_literal::hex;
 mod bpm;
 mod db;
 mod duration_in_beats;
+mod duration_in_quarter_notes;
 mod duration_in_seconds;
 mod hz;
 mod linear_volume_value;
@@ -22,6 +23,7 @@ mod semitones;
 pub use bpm::*;
 pub use db::*;
 pub use duration_in_beats::*;
+pub use duration_in_quarter_notes::*;
 pub use duration_in_seconds::*;
 pub use hz::*;
 pub use linear_volume_value::*;
diff --git a/main/common-types/src/position_in_quarter_notes.rs b/main/common-types/src/position_in_quarter_notes.rs
index 5a1d7c9b..461f002f 100644
--- a/main/common-types/src/position_in_quarter_notes.rs
+++ b/main/common-types/src/position_in_quarter_notes.rs
@@ -1,4 +1,6 @@
+use crate::DurationInQuarterNotes;
 use nutype::nutype;
+use std::ops::{Add, Neg};
 
 /// This represents a position expressed as an amount of quarter notes.
 ///
@@ -32,3 +34,25 @@ impl PositionInQuarterNotes {
 
     nutype_additions!(f64);
 }
+
+impl From<DurationInQuarterNotes> for PositionInQuarterNotes {
+    fn from(v: DurationInQuarterNotes) -> Self {
+        PositionInQuarterNotes::new_panic(v.get())
+    }
+}
+
+impl Add<DurationInQuarterNotes> for PositionInQuarterNotes {
+    type Output = Self;
+
+    fn add(self, rhs: DurationInQuarterNotes) -> Self {
+        PositionInQuarterNotes::new_panic(self.get() + rhs.get())
+    }
+}
+
+impl Neg for PositionInQuarterNotes {
+    type Output = Self;
+
+    fn neg(self) -> Self {
+        Self::new_panic(-self.get())
+    }
+}
diff --git a/main/medium/src/misc_newtypes.rs b/main/medium/src/misc_newtypes.rs
index c6a9ac6e..68c83d2f 100644
--- a/main/medium/src/misc_newtypes.rs
+++ b/main/medium/src/misc_newtypes.rs
@@ -11,6 +11,7 @@ use std::num::NonZeroI32;
 pub use reaper_common_types::Bpm;
 pub use reaper_common_types::Db;
 pub use reaper_common_types::DurationInBeats;
+pub use reaper_common_types::DurationInQuarterNotes;
 pub use reaper_common_types::DurationInSeconds;
 pub use reaper_common_types::Hz;
 pub use reaper_common_types::LinearVolumeValue as ReaperVolumeValue;