Issues with Php Music File Uploader - php

Question

So I'm trying to upload music files with php but the files aren't going to the folder, here's my code what are my mistakes and what am i missing
<form action="" method="post" enctype="multipart/form-data">
<input type="file" name="file"/>
<input type="text" placeholder="File Name" name="file_name">
<input type="text" placeholder="Artist Name" name="artist_name">
<textarea rows="5" placeholder="Description" name="description"></textarea>
<input type="submit" class="btn btn-warning bgcolor" name="submit" value="Upload"/>
</form>
<?php
if(isset($_POST['submit'])){
function GetMusicExtension($musictype)
{
if(empty($musictype)) return false;
switch($musictype){
case 'audio/mp3': return '.mp3';
default: return false;
}
}
if (!empty($_FILES["file"]["name"])) {
$file_name=$_FILES["file"]["name"];
$temp_name=$_FILES["file"]["tmp_name"];
$music_type=$_FILES["file"]["type"];
$size = $_FILES['file']['size'];
$ext= GetMusicExtension($music_type);
$musicname = $_POST['file_name'].$ext;
$target_path = "music/".$musicname;
if(move_uploaded_file($temp_name, $target_path)) {
$query = "insert into music(name,artist,description)
values('".$musicname."','".$_POST['artist_name']."','".$_POST['description']."')";
mysqli_query($link,$query) or die("error in $query == ----> ".mysqli_error($link));
}
}else{
exit('<script>alert("Error Saving Data... try again");</script>');
}
}
?>
PS: If i change the mime to an image mime and try uploading it uploads
UPDATE:
If i change post_max_size and upload_max_size it works. Thanks all.