ZayZay92
welcome to HRS
If I understand your question correctly- a song whether short or long is often a click track is used to maintain the tempo so it doesn't speed up and slow down. There are many who have great difficulty working with a click track (metronome) ... even some drummers. The click is just a temporary tool which is muted/removed from the session (and often once the drum tracks are done, but it can be brought back in if needed. The use of a click track has several uses which many overlook:
It's not uncommon for bands (even established ones) to have a song vary in tempo from start to finish, or a break, rest may not be slightly longer/shorter/quicker than the actual tempo. When it's being played with everyone in the same room, eye contact and body language is often enough of a "clue" for everyone to follow. When it's multi-tracked, or a single track is redone later, this "clue" no longer exists and the player has to anticipate the minor hiccups... which can sometimes be a very frustrating situation- for everyone involved- so a click eliminates the quessing
With the increased use of Midi, starting with a click track establishes a tempo grid which additional midi parts can be 'snapped-to" (aligned, quantized... etc) which makes life much easier
and IMHO the consistent tempo makes punch in's easier
Unlike early click, any number of planned tempo changes can be put into a session, so the argument that a click takes the "feeling" out of the song I think is more of an excuse by those who have trouble playing to one
so now my question is... did i understand your question correctly? LOL