> For the complete documentation index, see [llms.txt](https://help.trackstack.app/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.trackstack.app/inbox/sending-tracks/using-the-composer.md).
# Using the Composer
The Composer is where you prepare and send tracks to another user’s inbox. It allows you to choose your sending profile, add tracks, include a message, and select whether you’re sending a **Demo** or **Promo**.
***
### **Choose Your Sending Profile**
At the top of the Composer, you’ll see the **From** menu. This allows you to select which of your profiles or workspaces you want to send from — ideal if you manage multiple artists, labels, or brands.
Selecting the correct sending identity ensures recipients know exactly who the submission is coming from.
***
### **Choose the Recipient**
Under **To**, select the inbox you want to send your tracks to.
* You can search for any public inbox.
* Verified inboxes are marked with a **blue tick**.
* You can also click **View History** to see your previous submissions or interactions with that recipient.
This helps you keep track of ongoing relationships and past promos.
***
### **Add a Message**
You can include a short message with your submission. This is optional but recommended — especially for promos, label submissions, or follow-ups.
Examples include:
* Context about the track
* Release date or promo details
* Supporting notes or personal messages
Keep it brief and clear.
***
### **Select Demo or Promo Mode**
At the top-right of the Tracks section, you can choose whether you're sending:
* **Demos**
* **Promos**
This helps recipients sort and prioritise incoming submissions.
***
### **Add Your Tracks**
You can send up to **5 tracks** per submission.
To add a track:
1. Click **+ Add Track**
2. Select a track from your Library
3. Assign the **genre** for each track
Genres help the recipient filter their inbox and understand the context of your submission.
Each track appears as a card showing:
* Title
* Artwork (if available)
* Genre dropdown
* Remove option
You can add or remove tracks until you're happy with the selection.
***
### **Review Submission Details & Send**
Before sending, double-check:
* Sending profile
* Recipient
* Message
* Track list and genres
* Submission type (Demo or Promo)
This ensures your submission is accurate and professional. Once ready, click send. Your submission will be delivered to their inbox instantly. You can revisit past submissions via **View History.**
***
### **Summary**
The Composer is your central tool for creating clean, professional submissions on Trackstack.\
Whether you’re sending demos to labels or promos to DJs, it helps you:
* Choose your identity
* Add tracks
* Provide context
* Ensure correct genres
* Send quickly and accurately
A well-prepared submission increases your chances of receiving meaningful feedback and ongoing support.
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://help.trackstack.app/inbox/sending-tracks/using-the-composer.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.