Answer:
Many Baptist churches use older hymns in their services such as many of the Gospel revival songs written during the Ira Sankey period. Some less traditional churches use choruses and more contemporary worship songs, which are very similar to those used in a Pentecostal church.
Another answer:
There is not a lot of difference. Different churches have different styles of music, even though they all can be the same denomination. The main differences would be songs that share, or do not share, in doctrine. A song like, "Nothing But The Blood of Jesus" could be played in any Protestant church. But a song like "Holy Ghost Power" singing about the baptism of the Holy Ghost, would not be heard in the Baptist churches.
So the songs will be doctrinally different, but more often will share more songs than not.