Add a better way to create chords

README.md

@@ -32,17 +32,20 @@ println!("Dom7 C: {chord:X}");
 You can find more examples in the [examples][examples_folder] folder.
 
 ## Piano Exercises
-You can find all piano exercises implemented in the [practices][practices_file] file.
+You can find all piano exercises implemented in the [practices][practices_file] file. You can see the practices by running:
+```bsh
+cargo run --example practices
+```
 
 ### Exercise 1 (C - Am - F - G)
 ```rust
 use musika_rs::*;
 
-println!("Exercise 1: (C - Am - F - G");
-println!("{:X}", chords::Major::from(C)); // C
-println!("{:X}", chords::Minor::from(A)); // Amin
-println!("{:X}", chords::Major::from(F)); // F
-println!("{:X}", chords::Major::from(G)); // G
+println!("Exercise 1: (C - Am - F - G)");
+println!("{:X}", C.major()); // C [C, E, G]
+println!("{:X}", A.minor()); // Am [A, C, E]
+println!("{:X}", F.major()); // F [F, A, C]
+println!("{:X}", G.major()); // G [G, B, D]
 ```
 
 ## Resources

examples/practices.rs

@@ -1,11 +1,11 @@
 use musika_rs::*;
 
 fn exercise() {
-    println!("Exercise 1: (C - Am - F - G");
-    println!("{:X}", chords::Major::from(C)); // C
-    println!("{:X}", chords::Minor::from(A)); // Amin
-    println!("{:X}", chords::Major::from(F)); // F
-    println!("{:X}", chords::Major::from(G)); // G
+    println!("Exercise 1: (C - Am - F - G)");
+    println!("{:X}", C.major()); // C [C, E, G]
+    println!("{:X}", A.minor()); // Am [A, C, E]
+    println!("{:X}", F.major()); // F [F, A, C]
+    println!("{:X}", G.major()); // G [G, B, D]
 }
 
 fn main() {

src/note.rs

@@ -3,6 +3,8 @@ use std::{
     ops::{Add, Sub},
 };
 
+use crate::chords;
+
 use super::{Tone, OCTAVE};
 
 #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
@@ -42,6 +44,38 @@ impl Note {
             octave + 3
         }
     }
+
+    //
+    // Functions which build chords
+    //
+
+    pub fn diminished7(self) -> chords::Diminished7 {
+        chords::Diminished7::from(self)
+    }
+
+    pub fn dominant7(self) -> chords::Dominant7 {
+        chords::Dominant7::from(self)
+    }
+
+    pub fn major(self) -> chords::Major {
+        chords::Major::from(self)
+    }
+
+    pub fn major7(self) -> chords::Major7 {
+        chords::Major7::from(self)
+    }
+
+    pub fn minor(self) -> chords::Minor {
+        chords::Minor::from(self)
+    }
+
+    pub fn minor7(self) -> chords::Minor7 {
+        chords::Minor7::from(self)
+    }
+
+    pub fn minor7b5(self) -> chords::Minor7b5 {
+        chords::Minor7b5::from(self)
+    }
 }
 
 impl Display for Note {