I love Chuck Berry's Deep Feeling, Low Feeling and Blue Feeling compositions, Low Feeling being my favorite. They're real laid back compared to Berry's other music.
Rodrigo y Gabriella, I love those flamenco guitars but your baby might not have a taste for them.
If you are amenable to modern-ish jazz fusion, try Pat Metheny. He's rather eclectic, but his music is generally upbeat with complex rhythmic structure and interesting melodies. Two albums to try are "Speaking of Now" and "Letter from Home".
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