well, ive just started dj'ing a few weeks back and have a question about beatmatching,
When people choose what songs to mix do they take into account the BPM and key, for example, do people mainly mix say a 140bpm song into another 140bpm song that both have similar keys (say 7b and 8b)?
or do people often mix say a 140bpm track into a 135bpm track both of which have disimilar keys? and do people always take note of the bpm and key of the tracks, or just do it by ear?
i know im putting this in a really awkward way but im having difficulty mixing certain tracks together, i have a set of cdj's and a mixer that do not have a bpm counter and am finding it really hard to get the beats to match without clashing or sounding nasty with two tunes that have diff bpm's

any tips or advice for a noob who really wants to improve?
