<｜begin▁of▁sentence｜>### Instruction:
As a sound engineer working on a music production project, you need to determine the size of the maximum matching in a graph representing the connections between musical tracks. You can use NetworkX's Matching class to efficiently calculate the maximum matching size, which will help in optimizing the track arrangement for the final mix.
### Response:
from networkx.algorithms.matching import Matching

# Create an undirected graph with some edges
g = nx.Graph()
g.add_edges_from([(1, 2), (2, 3), (3, 4)])

# Find a maximum matching in the graph
matching = Matching(g)

# Get the number of edges in the matching
matching_size = len(matching)

# Print the number of edges in the matching
print('Size of maximum matching:', matching_size)
<|EOT|>
