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Topic: Create a playlist that will limit the songs to 1 track per artist? (Read 2227 times) previous topic - next topic
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Create a playlist that will limit the songs to 1 track per artist?

Hi

I am using playlist tree for creating some playlists based on simple query.
I have seen that it is possible to limit the tracks by number of tracks/mega/minutes but would someone please explain how can I limit the query results to 1 track per artist? (a la itunes)

thanks a lot

Create a playlist that will limit the songs to 1 track per artist?

Reply #1 –
Quote from: oglomov on
I am using playlist tree for creating some playlists based on simple query.
I have seen that it is possible to limit the tracks by number of tracks/mega/minutes but would someone please explain how can I limit the query results to 1 track per artist? (a la itunes)

thanks a lot

There are a couple of ways to approach this, but I recently made one using the scheme interpreter inside playlist tree that generates an hours worth of music, rated 4 or higher, without repeating an artist.

Set the "Source" to "@scheme" and set the format to this:

Code: [Select]
;;; Fill *Scheme* playlist with an hours worth, no repeat on artist
(letrec ((playlist-index (find-or-create-playlist "*Scheme*"))
	 (total-time 0)
	 (filter-string "rating GREATER 3")
	 (artist-list (list))
	 (intersect? 
	  (lambda (a b)
	    (cond
	     ((null? a) #f)
	     ((member (car a) b) #t)
	     (#t (intersect? (cdr a) b))))))
  (clear-playlist playlist-index)
  (for-each-db-entry
   (lambda (handle) 
     (let* ((len (get-length handle))
	    (artists (meta-list handle "artist"))
	    (add 
	     (lambda (h)
	       (set! artist-list (append artists artist-list))
	       (add-to-playlist h playlist-index)
	       (set! total-time (+ total-time len)))))
       (if (and (< (+ len total-time) (* 60 60))
		(not (intersect? artists artist-list)))
	   (add handle))))
   filter-string
   "$rand()")
  (activate-playlist playlist-index)
  (play-from-playlist playlist-index)
  (write artist-list))

It's available from my example page also, at http://wiki.bowron.us/index.php/Example_Queries#HARDCORE
There used to be a link to my website here.

Create a playlist that will limit the songs to 1 track per artist?

Reply #2 –
wow, cwbowron in person !!!

I have to be honest, it's been two days I have been studyng your code but with no luck ... it seems to be a little bit too complicated for me as it is based on mzscheme 
fact is I found playlist tree absolutely fantastic but I would like to understand more of this @scheme commands opposed to the sample playlist selection commands.

For example, let's say that I do not want songs to be picked on a rating basis, which part of your code should I remove?

I know this might be asking too much, but would it be possible to comment your code?

thx a lot for your help

Create a playlist that will limit the songs to 1 track per artist?

Reply #3 –
Quote from: oglomov on
I have to be honest, it's been two days I have been studyng your code but with no luck ... it seems to be a little bit too complicated for me as it is based on mzscheme 
fact is I found playlist tree absolutely fantastic but I would like to understand more of this @scheme commands opposed to the sample playlist selection commands.

For example, let's say that I do not want songs to be picked on a rating basis, which part of your code should I remove?

I know this might be asking too much, but would it be possible to comment your code?

thx a lot for your help


if you do not want any filtering done, change where it says "rating GREATER 3" change that so that it reads #f (no quotations marks).  If you want it to filter on something else you can change the "rating GREATER 3" to any autoplaylist filter you would like.
There used to be a link to my website here.