The AMPER Project seeks to collect and describe different prosodic samples of Romance languages for a large-scale multimedia atlas. Within this framework, the present paper examines several simple sentences produced by a 35-year-old female, whose first language Spanish shows a noticeable Catalan influence. The analyses performed on the corpus of 81 sentences focused on F0, duration, and intensity. As for F0 a similar intonation contour to that of the Catalan of Barcelona was observed for declaratives and interrogatives with and without the unstressed conjunction que in sentence-initial position. Examination of the phonetic results reveals a fall in the intonation curve at the end of declaratives (L% or L*L% according to the type of final pitch accent in the sentence), a prominent peak at the beginning of the predicate of interrogatives without que (L*+H; H+L* or L+H*+L according to the type of pitch accent) and L*+HH% in sentences ending in paroxytone or proparoxytone words, or H*H% in sentences ending in oxytone words. Interrogatives with que display the pattern L* at the end of the predicate. The general conclusion is that the passive knowledge of the prosody of a non-native contact language, in this case Catalan, appears to play a major role in modifying or determining the prosody of the speaker's mother tongue, here Spanish.