getting first letters of a string

[Unknown_Relic]

im new to python and im trying to split a string so it prints the first letter of each word.
Below is the error i keep getting

line 8, in split_song
for letter in songnames.split(" "):
AttributeError: 'function' object has no attribute 'split'

def access_data():
    with open("Songnames.txt", "r") as f:
        songnames = [line.strip("\n") for line in f]


def split_song(songnames):
    for letter in songnames.split(" "):
        print(letter[0])

songnames = access_data
split_song(songnames)