diff --git a/SabreTools.Models/Charts/SongIni.cs b/SabreTools.Models/Charts/SongIni.cs
index 6b2616e..3bdea0c 100644
--- a/SabreTools.Models/Charts/SongIni.cs
+++ b/SabreTools.Models/Charts/SongIni.cs
@@ -4,7 +4,7 @@ namespace SabreTools.Models.Charts
 {
     /// <see href="https://github.com/TheNathannator/GuitarGame_ChartFormats/tree/main/doc/FileFormats/song.ini"/> 
     /// <remarks>[song]/[Song]</remarks>
-    internal class SongIni
+    public class SongIni
     {
         #region Song/Chart Metadata
 
diff --git a/SabreTools.Models/Charts/Tier.cs b/SabreTools.Models/Charts/Tier.cs
new file mode 100644
index 0000000..ee36fca
--- /dev/null
+++ b/SabreTools.Models/Charts/Tier.cs
@@ -0,0 +1,16 @@
+namespace SabreTools.Models.Charts
+{
+    /// <see href="https://github.com/TheNathannator/GuitarGame_ChartFormats/blob/main/doc/FileFormats/Other/Frets%20on%20Fire%20X/Careers.md"/> 
+    public class Tier
+    {
+        /// <summary>
+        /// Display name of the tier.
+        /// </summary>
+        public string? Name { get; set; }
+
+        /// <summary>
+        /// Name used for associating a song with this tier, and for checking unlock requirements.
+        /// </summary>
+        public string? UnlockId { get; set; }
+    }
+}
\ No newline at end of file
diff --git a/SabreTools.Models/Charts/TitlesIni.cs b/SabreTools.Models/Charts/TitlesIni.cs
index 3ce159d..e29433f 100644
--- a/SabreTools.Models/Charts/TitlesIni.cs
+++ b/SabreTools.Models/Charts/TitlesIni.cs
@@ -1,10 +1,8 @@
-using System.Collections.Generic;
-
 namespace SabreTools.Models.Charts
 {
     /// <see href="https://github.com/TheNathannator/GuitarGame_ChartFormats/blob/main/doc/FileFormats/Other/Frets%20on%20Fire%20X/Careers.md"/> 
     /// <remarks>[titles]</remarks>
-    internal class TitlesIni
+    public class TitlesIni
     {
         /// <summary>
         /// A space-separated list of .ini sections to include in the career.
@@ -13,9 +11,8 @@ namespace SabreTools.Models.Charts
         public string[]? SectionList { get; set; }
 
         /// <summary>
-        /// `name` - Display name of the tier.
-        /// `unlock_id` - Name used for associating a song with this tier, and for checking unlock requirements.
+        /// This entry points to other sections that should be used as part of the career.
         /// </summary>
-        public Dictionary<string, (string? Name, string? UnlockId)>? Sections { get; set; }
+        public Tier[]? Sections { get; set; }
     }
 }
\ No newline at end of file
diff --git a/SabreTools.Models/SabreTools.Models.csproj b/SabreTools.Models/SabreTools.Models.csproj
index 47b4488..833d410 100644
--- a/SabreTools.Models/SabreTools.Models.csproj
+++ b/SabreTools.Models/SabreTools.Models.csproj
@@ -39,15 +39,6 @@
         <None Include="../README.md" Pack="true" PackagePath="" />
     </ItemGroup>
 
-    <!-- Support for old .NET versions -->
-    <ItemGroup
-        Condition="$(TargetFramework.StartsWith(`net2`)) OR $(TargetFramework.StartsWith(`net3`))">
-        <PackageReference Include="MinValueTupleBridge" Version="0.2.1" />
-    </ItemGroup>
-    <ItemGroup Condition="$(TargetFramework.StartsWith(`net4`))">
-        <PackageReference Include="System.ValueTuple" Version="4.5.0" />
-    </ItemGroup>
-
     <ItemGroup>
         <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     </ItemGroup>