Let's see how good your memories are. You can go as far back as you like, to even the 20's, 30's and 40's (or earlier, if you like) when jazz was pretty much the mainstream music. Post only "official" content uploaded or authorized by the artists or their labels whenever possible. And post no more than 4 suggestions per day, to give others a fairer chance. How you distribute those four is up to you. It could be four tracks by the same artist. Or four tracks by four different artists. Or even four different versions of the same song. Whatever floats your boat. Last, but not least, put each video or audio track in a separate post, to make thread navigation easier. IOW, don't put all 4 videos or tracks in the same post. If you just want to give a list of 4 songs without any audio or video, that can be done in one post, if you prefer.