Table:
0
A
B
C
D
E
F
1
Week #
Theme
Song choice
Original artist
Order #
Result
2
Audition
N/A
" The Climb "
Miley Cyrus
N/A
Advanced
3
Hollywood
Group Round
" Get Ready "
The Temptations
N/A
Advanced
4
Hollywood
Second Solo
" Angel "
Sarah McLachlan
N/A
Advanced
5
Top 24 (12 Men)
Billboard Hot 100 Hits
" Here Comes Goodbye "
Rascal Flatts
2
Safe
6
Top 20 (10 Men)
Billboard Hot 100 Hits
" My Girl "
The Temptations
8
Safe
7
Top 16 (8 Men)
Billboard Hot 100 Hits
" I'm Already There "
Lonestar
6
Safe
8
Top 12
The Rolling Stones
" Angie "
The Rolling Stones
11
Safe
9
Top 11
Billboard Number 1 Hits
" I Don't Want to Miss a Thing "
Aerosmith
4
Safe
10
Top 10
R&B / Soul
" Ain't No Sunshine "
Bill Withers
10
Safe
11
Top 9
Lennon–McCartney
" The Long and Winding Road "
The Beatles
1
Bottom 3
12
Top 9
Elvis Presley
" Blue Suede Shoes "
Carl Perkins
5
Safe
13
Top 7
Inspirational
" I Believe I Can Fly "
R. Kelly
4
Bottom 3
14
Top 6
Shania Twain
" You've Got a Way "
Shania Twain
5
Safe

Questions and formulas:
Question: how many times is the week # is audition?
Formula: ROWS(UNIQUE(FILTER(D1, A1="Audition")))
Formula2: ROWS(UNIQUE(FILTER(D2:D14, A2:A14="Audition")))
Level: medium