A subscription music library for DJs, with a player that keeps playing.

DJs need new tracks the week they come out, ready to play. A record pool gives working music professionals that in one place, for a monthly or yearly fee. Caribbean Music Pool needed a library members can search and listen to quickly, full downloads only paying members can get, and memberships that stay in step with their payments without someone checking each one by hand.

• Search and filters. Keywords across title, artist, album, label, genre, country and track type, with filters for genre, country and track type that show how many tracks each holds, and a range of release years.
• Every version. Songs come in the versions DJs play, such as instrumentals, a cappellas, TV tracks and DJ intros, each listed as its own track.
• Results that save time. The newest releases come first, and members can sort by artist, title, album, year or country. Featured tracks are pinned to the top, and tracks the member has already downloaded are marked so they don't get them twice. Every row can be previewed, downloaded or added to their download list without leaving the results, and selecting an album shows every track on it.
• It works like an app. Most websites load a whole new page with every click. The library loads only the part of the page that changes, like a single-page app, while the address bar and the back button still work as they should. So the player along the bottom keeps going: members can search, open a track, add it to their download list and come back without the music cutting out.
• Track pages. Cover art, artist, album, year, genre and label, with more tracks by the same artist.

Anyone can sign up and look around, with 30-second previews. Full membership is for music professionals, so the sign-up asks how they work in the industry and for links to their profiles.

• Approved automatically, or by staff. A member who gives their role in the industry and links to their profiles is approved automatically once their payment arrives. If they give too little, staff review them first.
• Monthly, yearly or custom. Monthly and yearly plans renew through PayPal subscriptions. A custom plan starts as a request to staff.
• In step with payments. PayPal tells the site when a payment arrives, and the site acts on it: it switches new members on once their first payment is in, cancels a sign-up whose first payment never arrives, and suspends an account that goes unpaid past its renewal date.
• Stopping payments. Members can stop their own payments and keep access until the end of what they've paid for.
• Affiliate prices. Members who join through an affiliate see that affiliate's prices.

• Thirty-second previews. Clips are cut from the track the first time they're played and kept, and new tracks have theirs made ahead of time.
• Music that can't be passed around. Every stream and download gets its own link that soon stops working, so sharing a link doesn't share the music.
• Batch downloads. Members add tracks to a batch, a list of tracks to download together, and get them all as one zip.
• Watching for misuse. Every download and login is recorded against the account. Staff are notified when an account downloads far more than usual in a week, and the dashboard shows which members download the most. Too many wrong passwords and the member has to reset theirs before they can log in again.

• Weekly trends. Staff build each week's lists by hand or from rules, such as the most-downloaded tracks in a genre or the newest uploads.
• Downloads history. Members see everything they've downloaded, by date.
• Track requests. Members can message the team to ask for a track the pool doesn't have yet, and get the reply in their account.
• Adding tracks. Staff upload tracks in batches, and the artist, album, genre and country fill in from each file on their own. When members search for something the pool doesn't have, staff can see it, so they know what to add next.

Caribbean Music Pool has been running for years, and we keep it up to date: payments and renewals, how tracks stream, and the software it runs on.