Speed for musician or bad poet covering miles (5)
I believe the answer is:
tempo
'speed for musician' is the definition.
'tempo' can be an answer for 'speed' (I've seen this before). I'm not sure about the 'for musician' bit.
'bad poet covering miles' is the wordplay.
'bad' is an anagram indicator.
'covering' indicates putting letters inside.
'miles' becomes 'm' (abbreviation).
'poet' is an anagram of 'tepo'.
'tepo' enclosing 'm' is 'TEMPO'.
'or' acts as a link.
Can you help me to learn more?
(Other definitions for tempo that I've seen before include "(Musically) the speed to be played" , "Metronome output" , "Speed at which piece of music is played" , "Muscial time" , "Pace of a piece of music" .)