diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..020a214
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,120 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
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diff --git a/Cargo.toml b/Cargo.toml
index 6a448db..80c9508 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,4 +3,8 @@ name = "termix"
 version = "0.1.0"
 edition = "2024"
 
+[workspace]
+resolver = "3"
+members = ["engine", "lib"]
+
 [dependencies]
diff --git a/engine/Cargo.toml b/engine/Cargo.toml
new file mode 100644
index 0000000..3e2f71e
--- /dev/null
+++ b/engine/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "engine"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+jack = "0.13.3"
+lib = { path = "../lib/" }
diff --git a/engine/src/main.rs b/engine/src/main.rs
new file mode 100644
index 0000000..b024c72
--- /dev/null
+++ b/engine/src/main.rs
@@ -0,0 +1,5 @@
+use lib;
+
+fn main() {
+    println!("Hello, world!");
+}
diff --git a/lib/Cargo.toml b/lib/Cargo.toml
new file mode 100644
index 0000000..aec3db6
--- /dev/null
+++ b/lib/Cargo.toml
@@ -0,0 +1,6 @@
+[package]
+name = "lib"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
diff --git a/lib/src/lib.rs b/lib/src/lib.rs
new file mode 100644
index 0000000..bada360
--- /dev/null
+++ b/lib/src/lib.rs
@@ -0,0 +1,2 @@
+mod track;
+mod region;
diff --git a/lib/src/region.rs b/lib/src/region.rs
new file mode 100644
index 0000000..61607e1
--- /dev/null
+++ b/lib/src/region.rs
@@ -0,0 +1,3 @@
+struct Region {
+    name: String,
+}
diff --git a/lib/src/track.rs b/lib/src/track.rs
new file mode 100644
index 0000000..a8260c9
--- /dev/null
+++ b/lib/src/track.rs
@@ -0,0 +1,9 @@
+enum TrackType {
+    Audio,
+    Midi,
+}
+
+struct Track {
+    name: String,
+    track_type: TrackType,
+}