1. An audio reproduction apparatus ( 100 ) suitable for use during sports training comprising: an input ( 101 ) for inputting an input audio signal (i); an output ( 102 ) for outputting an output audio signal (o); a user behavior identification unit capable of providing a data output; and an audio conditioning unit ( 104 ) for conditioning the output audio signal (o) dependent on the data output from the user behavior identification unit, characterized in that: the user behavior identification unit is a tempo derivation unit ( 103 ) for deriving the data output being a selected tempo (T), on the basis of a data signal (d 1 , d 2 , d 3 ); the audio conditioning unit ( 104 ) comprises a tempo calculation unit ( 106 ) arranged to calculate an input tempo (TI) of the input audio signal (i); and the audio conditioning unit ( 104 ) is arranged to deliver the output audio signal (o) with an output tempo (TO) within a predefined deviation (d) from the selected tempo (T), the output signal (o) depending on the input tempo (TI).