diff --git a/back/src/song/song.controller.ts b/back/src/song/song.controller.ts
index 0731cc6..164763e 100644
--- a/back/src/song/song.controller.ts
+++ b/back/src/song/song.controller.ts
@@ -6,6 +6,7 @@ import {
 	DefaultValuePipe,
 	Delete,
 	Get,
+	InternalServerErrorException,
 	NotFoundException,
 	Param,
 	ParseIntPipe,
@@ -30,8 +31,12 @@ export class SongController {
 		const song = await this.songService.song({ id });
 		if (!song) throw new NotFoundException('Song not found');
 
-		const file = createReadStream(song.midiPath);
-		return new StreamableFile(file);
+		try {
+			const file = createReadStream(song.midiPath);
+			return new StreamableFile(file, { type: 'audio/midi' });
+		} catch {
+			throw new InternalServerErrorException();
+		}
 	}
 
 	@Get(':id/musicXml')
diff --git a/back/test/robot/artists/artists.robot b/back/test/robot/artists/artists.robot
new file mode 100644
index 0000000..e0189c7
--- /dev/null
+++ b/back/test/robot/artists/artists.robot
@@ -0,0 +1,113 @@
+*** Settings ***
+Documentation       Tests of the /artist route.
+...                 Ensures that the artist CRUD works corectly.
+
+Resource            ../rest.resource
+
+
+*** Test Cases ***
+Create a artist
+    [Documentation]    Create a artist
+    &{res}=    POST
+    ...    /artist
+    ...    {"name": "Mama mia"}
+    Output
+    Integer    response status    201
+    [Teardown]    DELETE    /artist/${res.body.id}
+
+Duplicate a artist
+    [Documentation]    Duplicate a artist
+    &{res}=    POST
+    ...    /artist
+    ...    {"name": "Mama mia"}
+    Output
+    Integer    response status    201
+    &{res2}=    POST
+    ...    /artist
+    ...    {"name": "Mama mia"}
+    Output
+    Integer    response status    409
+	Should Be Equal    ${res.body.id}    ${res2.body.id}
+    [Teardown]    DELETE    /artist/${res.body.id}
+
+Find a artist
+    [Documentation]    Create a artist and find it
+    &{res}=    POST
+    ...    /artist
+    ...    {"name": "Mama mia"}
+    Output
+    Integer    response status    201
+    &{get}=    GET    /artist/${res.body.id}
+    Output
+    Integer    response status    200
+    Should Be Equal    ${res.body}    ${get.body}
+    [Teardown]    DELETE    /artist/${res.body.id}
+
+Find a artist non existant
+    [Documentation]    Find non existant artist
+    &{get}=    GET    /artist/9999
+    Integer    response status    404
+
+Find multiples artists
+    [Documentation]    Create two artists and find them
+    &{res}=    POST
+    ...    /artist
+    ...    {"name": "Mama mia"}
+    Output
+    Integer    response status    201
+    &{res2}=    POST
+    ...    /artist
+    ...    {"name": "Toto"}
+
+    Output
+    Integer    response status    201
+
+    &{get}=    GET    /artist
+    Output
+    Integer    response status    200
+    Should Contain    ${get.body.data}    ${res.body}
+    Should Contain    ${get.body.data}    ${res2.body}
+    [Teardown]    Run Keywords    DELETE    /artist/${res.body.id}
+    ...    AND    DELETE    /artist/${res2.body.id}
+
+Find multiples artists filtered
+    [Documentation]    Create two artists and find them
+    &{res}=    POST
+    ...    /artist
+    ...    {"name": "Mamamia"}
+    Output
+    Integer    response status    201
+    &{res2}=    POST
+    ...    /artist
+    ...    {"name": "jkgnsg"}
+    Output
+    Integer    response status    201
+
+    &{get}=    GET    /artist?name=Mamamia
+    Output
+    Integer    response status    200
+    Should Contain    ${get.body.data}    ${res.body}
+    Should Not Contain    ${get.body.data}    ${res2.body}
+    [Teardown]    Run Keywords    DELETE    /artist/${res.body.id}
+    ...    AND    DELETE    /artist/${res2.body.id}
+
+Find multiples artists filtered by type
+    [Documentation]    Create two artists and find them
+    &{res}=    POST
+    ...    /artist
+    ...    {"name": "Mama mia"}
+    Output
+    Integer    response status    201
+    &{res2}=    POST
+    ...    /artist
+    ...    {"name": "kldngsd"}
+    Output
+    Integer    response status    201
+
+    &{get}=    GET    /artist?id=${res.body.id}
+    Output
+    Integer    response status    200
+    Should Contain    ${get.body.data}    ${res.body}
+    Should Not Contain    ${get.body.data}    ${res2.body}
+    [Teardown]    Run Keywords    DELETE    /artist/${res.body.id}
+    ...    AND    DELETE    /artist/${res2.body.id}
diff --git a/back/test/robot/songs/songs.robot b/back/test/robot/songs/songs.robot
index 664b6b2..84048c5 100644
--- a/back/test/robot/songs/songs.robot
+++ b/back/test/robot/songs/songs.robot
@@ -100,9 +100,10 @@ Find multiples songs filtered by type
 Get midi file
     &{res}=    POST
     ...    /song
-    ...    {"name": "Mama mia", "difficulties": {}, "midiPath": "/musics/Beethoven-125-4.midi", "musicXmlPath": "/musics/Beethoven-125-4.mxl"}
+    ...    {"name": "Mama mia", "difficulties": {}, "midiPath": "/musics/Beethoven-125-4/Beethoven-125-4.midi", "musicXmlPath": "/musics/Beethoven-125-4/Beethoven-125-4.mxl"}
     Output
     Integer    response status    201
-	GET    /song/${res.body.id}/midi
-	Output
-	[Teardown]    DELETE    /song/${res.body.id}
+    GET    /song/${res.body.id}/midi
+    Integer    response status    200
+    #Output
+    [Teardown]    DELETE    /song/${res.body.id}
diff --git a/musics/populate.py b/musics/populate.py
index a04afa0..a63d134 100755
--- a/musics/populate.py
+++ b/musics/populate.py
@@ -24,8 +24,8 @@ def populateFile(path, midi, mxl):
 	print(f"Populating {metadata['Name']}")
 	res = requests.post(f"{url}/song", json={
 		"name": metadata["Name"],
-		"midiPath": midi,
-		"musicXmlPath": mxl,
+		"midiPath": f"/musics/{midi}",
+		"musicXmlPath": f"/musics/{mxl}",
 		"difficulties": dificulties,
 		"artist": getOrCreateArtist(metadata["Artist"]),
 		# "album": metadata["Album"],
@@ -40,7 +40,6 @@ def main():
 		url = "http://localhost:3000"
 	print("Searching for files...")
 	for file in glob.glob("**/*.ini", recursive=True):
-		file = os.path.abspath(file)
 		print(f"File found: {file}")
 		path = os.path.splitext(file)[0]
 		populateFile(file, path + ".midi", path + ".mxl")