diff --git a/src/lib.rs b/src/lib.rs
index 1009908..34ee6e6 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -1,2 +1,3 @@
 pub mod meta;
+pub mod properties;
 pub mod types;
diff --git a/src/properties.rs b/src/properties.rs
new file mode 100644
index 0000000..1989cfd
--- /dev/null
+++ b/src/properties.rs
@@ -0,0 +1,9 @@
+
+#[derive(Debug, Default, Clone)]
+pub struct Duration {
+    pub val: i32
+}
+
+pub fn get_duration(song_path: &String) -> Duration {
+    Duration::default()
+}