diff --git a/src/sheet.rs b/src/sheet.rs
index be62852..1dade35 100644
--- a/src/sheet.rs
+++ b/src/sheet.rs
@@ -75,8 +75,8 @@ impl SheetKindDiscriminants {
 
 #[derive(sqlx::FromRow)]
 pub struct Composer {
-    id: i64,
-    name: String,
+    pub id: i64,
+    pub name: String,
 }
 
 #[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)]
diff --git a/src/sheet_dao.rs b/src/sheet_dao.rs
index a771cd3..3347fa3 100644
--- a/src/sheet_dao.rs
+++ b/src/sheet_dao.rs
@@ -1,6 +1,6 @@
 use crate::{
     database::Database,
-    sheet::{I64DateTime, Pdf, Sheet, SheetKind, SheetKindDiscriminants},
+    sheet::{Composer, I64DateTime, Pdf, Sheet, SheetKind, SheetKindDiscriminants},
 };
 use sqlx::{sqlite::SqliteRow, Row};
 use std::path::{Path, PathBuf};
@@ -71,6 +71,16 @@ pub async fn update_sheet_last_opened(database: &Database, sheet: &Sheet) -> sql
     .map(|_| ())
 }
 
+pub async fn get_composer_by_id(database: &Database, id: i64) -> sqlx::Result<Composer> {
+    sqlx::query(&format!("SELECT * FROM {} WHERE id = {}", "composers", id))
+        .map(|row: SqliteRow| Composer {
+            id,
+            name: row.try_get("name").unwrap(),
+        })
+        .fetch_one(&database.connection)
+        .await
+}
+
 pub async fn fetch_all_sheets(database: &Database) -> sqlx::Result<Vec<Sheet>> {
     let mut sheets: Vec<Sheet> = Vec::new();
 
diff --git a/src/ui/app.rs b/src/ui/app.rs
index 6344a24..8f0f1d0 100644
--- a/src/ui/app.rs
+++ b/src/ui/app.rs
@@ -3,7 +3,7 @@ use std::{path::PathBuf, sync::Arc};
 use chrono::Utc;
 use gtk::prelude::*;
 use relm4::{
-    component::{AsyncComponent, AsyncComponentParts},
+    component::{AsyncComponent, AsyncComponentParts, AsyncController},
     gtk::Adjustment,
     prelude::*,
     AsyncComponentSender,
@@ -18,7 +18,7 @@ use crate::{
 
 use super::{
     mcdu::McduModel,
-    sheet_edit_dialog::{SheetEditDialogInput, SheetEditDialogModel},
+    sheet_edit_dialog::{SheetEditDialogInit, SheetEditDialogInput, SheetEditDialogModel},
     sheet_listing::{SheetListingInput, SheetListingModel, SheetListingOutput},
 };
 
@@ -29,7 +29,7 @@ pub struct AppModel {
     sheets_listing: Controller<SheetListingModel>,
     edit_mode: bool,
     scroll_adjustment: Adjustment,
-    sheet_edit_dialog: Option<Controller<SheetEditDialogModel>>,
+    sheet_edit_dialog: Option<AsyncController<SheetEditDialogModel>>,
 }
 
 #[derive(Debug)]
@@ -163,7 +163,10 @@ impl AsyncComponent for AppModel {
                     self.sheet_edit_dialog = Some(
                         SheetEditDialogModel::builder()
                             .transient_for(&root)
-                            .launch(sheet)
+                            .launch(SheetEditDialogInit {
+                                sheet,
+                                database: Arc::clone(&self.database),
+                            })
                             .forward(sender.input_sender(), |_| todo!()),
                     );
                 } else {
diff --git a/src/ui/sheet_edit_dialog.rs b/src/ui/sheet_edit_dialog.rs
index d221200..6fc5bac 100644
--- a/src/ui/sheet_edit_dialog.rs
+++ b/src/ui/sheet_edit_dialog.rs
@@ -1,11 +1,16 @@
-use std::borrow::BorrowMut;
+use std::{borrow::BorrowMut, sync::Arc};
 
 use gtk::prelude::*;
-use relm4::prelude::*;
+use relm4::{
+    component::{AsyncComponent, AsyncComponentParts},
+    prelude::*,
+    AsyncComponentSender,
+};
 
-use crate::sheet::Sheet;
+use crate::{database::Database, sheet::Sheet, sheet_dao};
 
 pub struct SheetEditDialogModel {
+    database: Arc<Database>,
     hidden: bool,
     sheet: Option<Sheet>,
     sheet_name: String,
@@ -14,6 +19,11 @@ pub struct SheetEditDialogModel {
     book_sheets: Vec<(String, String, i64)>,
 }
 
+pub struct SheetEditDialogInit {
+    pub database: Arc<Database>,
+    pub sheet: Sheet,
+}
+
 #[derive(Debug)]
 pub enum SheetEditDialogInput {
     Accept,
@@ -25,11 +35,12 @@ pub enum SheetEditDialogOutput {
     SheetEdited(Sheet),
 }
 
-#[relm4::component(pub)]
-impl SimpleComponent for SheetEditDialogModel {
-    type Init = Sheet;
+#[relm4::component(pub, async)]
+impl AsyncComponent for SheetEditDialogModel {
+    type Init = SheetEditDialogInit;
     type Input = SheetEditDialogInput;
     type Output = SheetEditDialogOutput;
+    type CommandOutput = ();
 
     view! {
         gtk::Window {
@@ -54,6 +65,13 @@ impl SimpleComponent for SheetEditDialogModel {
                     #[watch]
                     set_text : &model.sheet_composer,
                 },
+                gtk::Label {
+                    set_text: "Book"
+                },
+                gtk::CheckButton {
+                    #[watch]
+                    set_active: model.is_book,
+                },
                 gtk::Box {
                     set_orientation: gtk::Orientation::Horizontal,
                     set_margin_top:5,
@@ -70,20 +88,26 @@ impl SimpleComponent for SheetEditDialogModel {
         }
     }
 
-    fn init(
+    async fn init(
         params: Self::Init,
-        root: &Self::Root,
-        sender: ComponentSender<Self>,
-    ) -> ComponentParts<Self> {
-        let sheet = params;
+        root: Self::Root,
+        sender: AsyncComponentSender<Self>,
+    ) -> AsyncComponentParts<Self> {
+        let sheet = params.sheet;
         let mut sheet_name = String::new();
         let mut sheet_composer = String::new();
         let mut is_book = false;
 
         match &sheet.kind {
-            crate::sheet::SheetKind::Sheet { name, .. } => {
+            crate::sheet::SheetKind::Sheet {
+                name, composer_id, ..
+            } => {
                 sheet_name = name.to_string();
-                // sheet_composer = composer_id.to_string();
+                if let Ok(composer) =
+                    sheet_dao::get_composer_by_id(&params.database, *composer_id).await
+                {
+                    sheet_composer = composer.name;
+                }
             }
             crate::sheet::SheetKind::Orphan => {
                 sheet_name = sheet.pdf.get_name().to_string();
@@ -92,10 +116,20 @@ impl SimpleComponent for SheetEditDialogModel {
                 name,
                 composer_id,
                 sheet_ids,
-            } => todo!("Cannot yet handle books!"),
+            } => {
+                is_book = true;
+                sheet_name = name.to_string();
+                if let Ok(composer) =
+                    sheet_dao::get_composer_by_id(&params.database, *composer_id).await
+                {
+                    sheet_composer = composer.name;
+                }
+                // TODO: load sheets of book
+            }
         };
 
         let model = SheetEditDialogModel {
+            database: params.database,
             hidden: false,
             sheet: Some(sheet),
             sheet_name,
@@ -105,10 +139,17 @@ impl SimpleComponent for SheetEditDialogModel {
         };
         let widgets = view_output!();
 
-        ComponentParts { model, widgets }
+        AsyncComponentParts { model, widgets }
     }
 
-    fn update(&mut self, msg: Self::Input, sender: ComponentSender<Self>) {
+    // TODO: init_loading_widgets
+
+    async fn update(
+        &mut self,
+        msg: Self::Input,
+        sender: AsyncComponentSender<Self>,
+        _root: &Self::Root,
+    ) {
         match msg {
             SheetEditDialogInput::Accept => {
                 self.hidden = true;